Q: Is 688,020 a Prime Number?
A: No, 688,020 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 688020 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 11,467 22,934 34,401 45,868 57,335 68,802 114,670 137,604 172,005 229,340 344,010 and 688,020, with no remainder.
Since 688,020 cannot be divided by just 1 and 688,020, it is not a prime number.