Anyone good at faking arithmancy/numerology?

I have a phrase of 13 words, 15 syllables, 54 letters. The letter numbers (a=1, b=2 etc.) add up to 682 692 if I haven't messed up my maths. I'd rather not quote it here because spoilers for forthcoming chapters, but if anyone thinks it would help send me a personal message.

For Harry Potter story purposes I need some sort of MAJOR arcane arithmantical significance in the numbers etc. - I'm guessing that Arithmancy works something like a more complex version of numerology, but I'm quite happy for it to be some other sort of mathematical progresson or something. Any suggestions?

Later - correct total is 692, my bad. Comes from a background in physics and biology, not maths, it's the right order of magnitude...

Another RPG bundle offer - Bundle of Tentacles 5

Another horror offering, this time for Call of Cthulhu etc:

Bundle of Tentacles 5

https://bundleofholding.com/presents/Tentacles5

"This Bundle of Tentacles 5 is our fifth collection of tabletop roleplaying supplements and scenarios for Chaosium's Call of Cthulhu RPG inspired by H. P. Lovecraft's Cthulhu Mythos. This all-new offer presents big collections from Stygian Fox Publishing and Arc Dream Publishing, plus the Black Armada story game Lovecraftesque.

We provide each ebook complete in .PDF (Portable Document Format). Like all Bundle of Holding titles, these books have NO DRM (Digital Restrictions Management), and our customers are entitled to move them freely among all their ereaders.

Ten percent of each payment (after gateway fees) goes to a highly Mythos-appropriate charity, American Veterans Archaeological Recovery, a nonprofit that rehabilitates disabled military veterans through goal-oriented, team-centered excavations with a community of archaeological researchers. AVAR CEO Steven Humphreys says, "We don't find many cursed artifacts (some...), but doing this stuff gets about as close as most of us really want to be to the type of adventures we create in roleplaying games."

The total retail value of the titles in this offer is US$98. Customers who pay just US$6.95 get all four titles in our Starter Collection (retail value $50) as DRM-free .PDF ebooks: the Stygian Fox modern-day scenario collection The Things We Leave Behind (plus its 104-page collection of play aids, The Mark of Evil) and its modern magic supplement The Book of Contemporary Magical Things; Arc Dream's Old Ones Rising (reprinting four issues of the seminal Mythos magazine The Unspeakable Oath); and for fun we're throwing in the free Dicegeeks reprint of the 1894 Cambridge University lecture on Libraries in the Medieval and Renaissance Periods, a fact-filled resource for Keepers and gamemasters who prize authentic historical detail.

Those who pay more than the threshold (average) price, which is set at $16.95 to start, also get our entire Bonus Collection with three more titles worth an additional $48:

• Lovecraftesque (Black Armada): No gamemaster needed for this no-prep storytelling game where the players generate all-new horrors in a slow-building suspense tale.
• Fear's Sharp Little Needles (Stygian Fox): A star-studded collection of 26 short scenarios for one-shot investigations and convention games.
• Hudson & Brand, Inquiry Agents of the Obscure (Stygian Fox): Your Cthulhu by Gaslight player characters inherit this Victorian-era consulting detective agency. Includes the free play aids A Lens of Darkness, Spirits of London, and The Thirteen.

CoC is a game I like a lot, despite being a bit "monstered out" in recent years, and it looks like you're getting a hell of a lot for your money. Recommended, subject to all the usual YMMV caveats.

Mac question update

I was asked for more details - it's a 1.83 ghz Core 2 Duo with 1GB RAM

Just tried booting it off a memory stick that allegedly has OS X 10.7 and it doesn't work, but the stick is old and may be damaged. I have 10.4 (Tiger), 10.5 (Leopard) and 10.6 (Snow Leopard) on DVD-ROM - they're versions that will work on any compatible mac, not the "shipped with an individual machine" grey disks.

Would it be possible to do this sort of DVD to USB transfer on my MacBook Pro (running 10.13) without messing up the hard drive, or would I be better off doing it on the windows 7 box.

Update - 7.55 Tuesday - I tried to get a memory stick install to work and failed (probably did something wrong setting up the stick), but decided to try one of the old Mac DVD drives I have with a Firewire to IDE interface from an old external hard drive. And amazingly it worked pretty well once I found a drive that was still reading reliably - got Snow Leopard installed in about an hour, I'm now getting the updates downloaded from Apple and installing them. Hopefully I'll get the thing on sale in the next day or two.