The three oldest versions of the Old Testament, Samaritan, Hebrew, and Greek do not even agree on the number of years (added up by ages of the patriarchs) - respectively 1307, 1656, and 2,242 years.
And bear in mind that if you take this literally, (just picking one, like James Ussher) you are also accepting that ancient (or at least circa 4500 bc) people actually lived 600, 900 or so many years.
You are also ignoring the fact that early carved bone artifacts such as the Uganda-Zaire counting stick date to 9,000 bc; and that similar others far older have been found...the Magdelian (French) era from 15,000 bc, and the Czech Aurignacian era to 30,000 bc.
Although the witnesses hate scientific dating methods, the science is quite sound and there is little reason to doubt the antiquity of these obviously human artifacts.