Q: Is 667,604 a Prime Number?
A: No, 667,604 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 667604 can be evenly divided by 1 2 4 7 14 28 113 211 226 422 452 791 844 1,477 1,582 2,954 3,164 5,908 23,843 47,686 95,372 166,901 333,802 and 667,604, with no remainder.
Since 667,604 cannot be divided by just 1 and 667,604, it is not a prime number.