Q: Is 640,324 a Prime Number?
A: No, 640,324 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 640324 can be evenly divided by 1 2 4 160,081 320,162 and 640,324, with no remainder.
Since 640,324 cannot be divided by just 1 and 640,324, it is not a prime number.