Q: Is 687,889 a Prime Number?
A: No, 687,889 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 687889 can be evenly divided by 1 67 10,267 and 687,889, with no remainder.
Since 687,889 cannot be divided by just 1 and 687,889, it is not a prime number.