Q: Is 667,408 a Prime Number?
A: No, 667,408 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 667408 can be evenly divided by 1 2 4 7 8 14 16 28 56 59 101 112 118 202 236 404 413 472 707 808 826 944 1,414 1,616 1,652 2,828 3,304 5,656 5,959 6,608 11,312 11,918 23,836 41,713 47,672 83,426 95,344 166,852 333,704 and 667,408, with no remainder.
Since 667,408 cannot be divided by just 1 and 667,408, it is not a prime number.