'Sixty' in the Bible

Now these [were] the measurements of Solomon for building the house of God: the length in cubits by the former measurement [was] sixty cubits, and the width [was] twenty cubits.

And Rehoboam loved Maacah the daughter of Absalom more than all his wives and concubines (for he took eighteen wives and sixty concubines, and he fathered twenty-eight sons and sixty daughters).

with one thousand two hundred chariots and sixty thousand horsemen. And there was no number to the people who came up with him from Egypt--Libyans, Sukkites, and Cushites.