Q: Is 685,221 a Prime Number?
A: No, 685,221 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 685221 can be evenly divided by 1 3 71 213 3,217 9,651 228,407 and 685,221, with no remainder.
Since 685,221 cannot be divided by just 1 and 685,221, it is not a prime number.