Q: Is 620,728 a Prime Number?
A: No, 620,728 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 620728 can be evenly divided by 1 2 4 8 77,591 155,182 310,364 and 620,728, with no remainder.
Since 620,728 cannot be divided by just 1 and 620,728, it is not a prime number.