Q: Is 687,960 a Prime Number?
A: No, 687,960 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 687960 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 20 21 24 26 27 28 30 35 36 39 40 42 45 49 52 54 56 60 63 65 70 72 78 84 90 91 98 104 105 108 117 120 126 130 135 140 147 156 168 180 182 189 195 196 210 216 234 245 252 260 270 273 280 294 312 315 351 360 364 378 390 392 420 441 455 468 490 504 520 540 546 585 588 630 637 702 728 735 756 780 819 840 882 910 936 945 980 1,080 1,092 1,170 1,176 1,260 1,274 1,323 1,365 1,404 1,470 1,512 1,560 1,638 1,755 1,764 1,820 1,890 1,911 1,960 2,184 2,205 2,340 2,457 2,520 2,548 2,646 2,730 2,808 2,940 3,185 3,276 3,510 3,528 3,640 3,780 3,822 4,095 4,410 4,680 4,914 5,096 5,292 5,460 5,733 5,880 6,370 6,552 6,615 7,020 7,560 7,644 8,190 8,820 9,555 9,828 10,584 10,920 11,466 12,285 12,740 13,230 14,040 15,288 16,380 17,199 17,640 19,110 19,656 22,932 24,570 25,480 26,460 28,665 32,760 34,398 38,220 45,864 49,140 52,920 57,330 68,796 76,440 85,995 98,280 114,660 137,592 171,990 229,320 343,980 and 687,960, with no remainder.
Since 687,960 cannot be divided by just 1 and 687,960, it is not a prime number.