Q: Is 664,724 a Prime Number?
A: No, 664,724 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 664724 can be evenly divided by 1 2 4 137 274 548 1,213 2,426 4,852 166,181 332,362 and 664,724, with no remainder.
Since 664,724 cannot be divided by just 1 and 664,724, it is not a prime number.