Q: Is 620,321 a Prime Number?
A: No, 620,321 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 620321 can be evenly divided by 1 13 47,717 and 620,321, with no remainder.
Since 620,321 cannot be divided by just 1 and 620,321, it is not a prime number.