Q: Is 688,900 a Prime Number?
A: No, 688,900 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 688900 can be evenly divided by 1 2 4 5 10 20 25 50 83 100 166 332 415 830 1,660 2,075 4,150 6,889 8,300 13,778 27,556 34,445 68,890 137,780 172,225 344,450 and 688,900, with no remainder.
Since 688,900 cannot be divided by just 1 and 688,900, it is not a prime number.