Q: Is 620,609 a Prime Number?
A: No, 620,609 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 620609 can be evenly divided by 1 11 23 121 223 253 2,453 2,783 5,129 26,983 56,419 and 620,609, with no remainder.
Since 620,609 cannot be divided by just 1 and 620,609, it is not a prime number.