Q: Is 689,680 a Prime Number?
A: No, 689,680 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 689680 can be evenly divided by 1 2 4 5 8 10 16 20 37 40 74 80 148 185 233 296 370 466 592 740 932 1,165 1,480 1,864 2,330 2,960 3,728 4,660 8,621 9,320 17,242 18,640 34,484 43,105 68,968 86,210 137,936 172,420 344,840 and 689,680, with no remainder.
Since 689,680 cannot be divided by just 1 and 689,680, it is not a prime number.