Q: Is 646,764 a Prime Number?
A: No, 646,764 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 646764 can be evenly divided by 1 2 3 4 6 12 53,897 107,794 161,691 215,588 323,382 and 646,764, with no remainder.
Since 646,764 cannot be divided by just 1 and 646,764, it is not a prime number.