Q: Is 685,020 a Prime Number?
A: No, 685,020 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 685020 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 233 245 294 420 466 490 588 699 735 932 980 1,165 1,398 1,470 1,631 2,330 2,796 2,940 3,262 3,495 4,660 4,893 6,524 6,990 8,155 9,786 11,417 13,980 16,310 19,572 22,834 24,465 32,620 34,251 45,668 48,930 57,085 68,502 97,860 114,170 137,004 171,255 228,340 342,510 and 685,020, with no remainder.
Since 685,020 cannot be divided by just 1 and 685,020, it is not a prime number.