'Sixty six' in the Bible

All the souls that came with Jacob to Egypt, that had come out of his loins, besides Jacob's sons' wives: all the souls were sixty-six.

And if she bear a female, then she shall be unclean two weeks, as in her separation; and she shall continue sixty-six days in the blood of her cleansing.

And the weight of gold that came to Solomon in one year was six hundred and sixty-six talents of gold,

And the weight of gold that came to Solomon in one year was six hundred and sixty-six talents of gold,

The children of Adonikam, six hundred and sixty-six.

Here is wisdom. He that has understanding let him count the number of the beast: for it is a man's number; and its number is six hundred and sixty-six.