Q: Is 673,408 a Prime Number?
A: No, 673,408 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 673408 can be evenly divided by 1 2 4 8 16 32 64 128 5,261 10,522 21,044 42,088 84,176 168,352 336,704 and 673,408, with no remainder.
Since 673,408 cannot be divided by just 1 and 673,408, it is not a prime number.