Q: Is 673,664 a Prime Number?
A: No, 673,664 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 673664 can be evenly divided by 1 2 4 8 16 19 32 38 64 76 128 152 277 304 554 608 1,108 1,216 2,216 2,432 4,432 5,263 8,864 10,526 17,728 21,052 35,456 42,104 84,208 168,416 336,832 and 673,664, with no remainder.
Since 673,664 cannot be divided by just 1 and 673,664, it is not a prime number.