The number 675,360 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 67 70 72 80 84 90 96 105 112 120 126 134 140 144 160 168 180 201 210 224 240 252 268 280 288 315 335 336 360 402 420 469 480 504 536 560 603 630 670 672 720 804 840 938 1,005 1,008 1,072 1,120 1,206 1,260 1,340 1,407 1,440 1,608 1,680 1,876 2,010 2,016 2,144 2,345 2,412 2,520 2,680 2,814 3,015 3,216 3,360 3,752 4,020 4,221 4,690 4,824 5,040 5,360 5,628 6,030 6,432 7,035 7,504 8,040 8,442 9,380 9,648 10,080 10,720 11,256 12,060 14,070 15,008 16,080 16,884 18,760 19,296 21,105 22,512 24,120 28,140 32,160 33,768 37,520 42,210 45,024 48,240 56,280 67,536 75,040 84,420 96,480 112,560 135,072 168,840 225,120 337,680 and 675,360, with no remainder.
Since 675,360 cannot be divided by just 1 and 675,360, it is a composite number.