Q: Is 721,669 a Prime Number?
A: No, 721,669 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 721669 can be evenly divided by 1 13 43 559 1,291 16,783 55,513 and 721,669, with no remainder.
Since 721,669 cannot be divided by just 1 and 721,669, it is not a prime number.