Q: Is 640,616 a Prime Number?
A: No, 640,616 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 640616 can be evenly divided by 1 2 4 8 80,077 160,154 320,308 and 640,616, with no remainder.
Since 640,616 cannot be divided by just 1 and 640,616, it is not a prime number.