Q: Is 688,480 a Prime Number?
A: No, 688,480 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 688480 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 32 40 52 65 80 104 130 160 208 260 331 416 520 662 1,040 1,324 1,655 2,080 2,648 3,310 4,303 5,296 6,620 8,606 10,592 13,240 17,212 21,515 26,480 34,424 43,030 52,960 68,848 86,060 137,696 172,120 344,240 and 688,480, with no remainder.
Since 688,480 cannot be divided by just 1 and 688,480, it is not a prime number.