Q: Is 620,631 a Prime Number?
A: No, 620,631 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 620631 can be evenly divided by 1 3 9 11 33 99 6,269 18,807 56,421 68,959 206,877 and 620,631, with no remainder.
Since 620,631 cannot be divided by just 1 and 620,631, it is not a prime number.