Q: Is 687,004 a Prime Number?
A: No, 687,004 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 687004 can be evenly divided by 1 2 4 17 34 68 10,103 20,206 40,412 171,751 343,502 and 687,004, with no remainder.
Since 687,004 cannot be divided by just 1 and 687,004, it is not a prime number.