The number 627,480 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 42 45 54 56 60 63 70 72 83 84 90 105 108 120 126 135 140 166 168 180 189 210 216 249 252 270 280 315 332 360 378 415 420 498 504 540 581 630 664 747 756 830 840 945 996 1,080 1,162 1,245 1,260 1,494 1,512 1,660 1,743 1,890 1,992 2,241 2,324 2,490 2,520 2,905 2,988 3,320 3,486 3,735 3,780 4,482 4,648 4,980 5,229 5,810 5,976 6,972 7,470 7,560 8,715 8,964 9,960 10,458 11,205 11,620 13,944 14,940 15,687 17,430 17,928 20,916 22,410 23,240 26,145 29,880 31,374 34,860 41,832 44,820 52,290 62,748 69,720 78,435 89,640 104,580 125,496 156,870 209,160 313,740 and 627,480, with no remainder.
Since 627,480 cannot be divided by just 1 and 627,480, it is a composite number.