Q: Is 678,890 a Prime Number?
A: No, 678,890 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 678890 can be evenly divided by 1 2 5 10 29 58 145 290 2,341 4,682 11,705 23,410 67,889 135,778 339,445 and 678,890, with no remainder.
Since 678,890 cannot be divided by just 1 and 678,890, it is not a prime number.