Q: Is 688,620 a Prime Number?
A: No, 688,620 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 688620 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 499 690 998 1,380 1,497 1,996 2,495 2,994 4,990 5,988 7,485 9,980 11,477 14,970 22,954 29,940 34,431 45,908 57,385 68,862 114,770 137,724 172,155 229,540 344,310 and 688,620, with no remainder.
Since 688,620 cannot be divided by just 1 and 688,620, it is not a prime number.