Q: Is 646,489 a Prime Number?
A: No, 646,489 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 646489 can be evenly divided by 1 139 4,651 and 646,489, with no remainder.
Since 646,489 cannot be divided by just 1 and 646,489, it is not a prime number.