Q: Is 666,949 a Prime Number?
A: No, 666,949 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 666949 can be evenly divided by 1 661 1,009 and 666,949, with no remainder.
Since 666,949 cannot be divided by just 1 and 666,949, it is not a prime number.