Q: Is 687,975 a Prime Number?
A: No, 687,975 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 687975 can be evenly divided by 1 3 5 15 25 75 9,173 27,519 45,865 137,595 229,325 and 687,975, with no remainder.
Since 687,975 cannot be divided by just 1 and 687,975, it is not a prime number.