Chmod is not really six hundred and sixty six, it is 3 sixes.

chmod 666 is setting the permissions to read and write for owner, group and others.
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Saying chmod 666 is like saying http://www.fathersfate.com.mx is 666.fathersfate.com.mx

How to get 666 from www?

The Hebrew alphabet does not have separate characters or alphabets for numbers and letters. Letters are also used as numbers. So each letter is a numerical value.

The Hebrew equivalent of our “w” is the letter “vav” or “waw”. The numerical value of vav is 6. So the English “www” transliterated into Hebrew is “vav vav vav”, which numerically is 666.

The number is not simply three SIXES or 6-6-6, but 600 + 60 + 6, or the number “Six hundred sixty and six”.

The actual total of “www” and “chmod 666″ (rwrwrw) is 18 — not 666

chmod 6 comes from 4 for write + 2 for read = 6.