Q: Is 687,675 a Prime Number?
A: No, 687,675 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 687675 can be evenly divided by 1 3 5 15 25 53 75 159 173 265 519 795 865 1,325 2,595 3,975 4,325 9,169 12,975 27,507 45,845 137,535 229,225 and 687,675, with no remainder.
Since 687,675 cannot be divided by just 1 and 687,675, it is not a prime number.