Q: Is 678,889 a Prime Number?
A: No, 678,889 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 678889 can be evenly divided by 1 19 35,731 and 678,889, with no remainder.
Since 678,889 cannot be divided by just 1 and 678,889, it is not a prime number.