Q: Is 620,909 a Prime Number?
A: Yes, 620,909 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 620909 can be evenly divided by 1 and 620,909, with no remainder.
Since 620,909 can be divided by just 1 and 620,909, it is a prime number.