The number 8,448,660 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 15 17 18 20 22 30 33 34 36 44 45 51 55 60 66 68 85 90 99 102 110 132 153 165 170 180 187 198 204 220 251 255 306 330 340 374 396 495 502 510 561 612 660 748 753 765 935 990 1,004 1,020 1,122 1,255 1,506 1,530 1,683 1,870 1,980 2,244 2,259 2,510 2,761 2,805 3,012 3,060 3,366 3,740 3,765 4,267 4,518 5,020 5,522 5,610 6,732 7,530 8,283 8,415 8,534 9,036 11,044 11,220 11,295 12,801 13,805 15,060 16,566 16,830 17,068 21,335 22,590 24,849 25,602 27,610 33,132 33,660 38,403 41,415 42,670 45,180 46,937 49,698 51,204 55,220 64,005 76,806 82,830 85,340 93,874 99,396 124,245 128,010 140,811 153,612 165,660 187,748 192,015 234,685 248,490 256,020 281,622 384,030 422,433 469,370 496,980 563,244 704,055 768,060 844,866 938,740 1,408,110 1,689,732 2,112,165 2,816,220 4,224,330 and 8,448,660, with no remainder.
Since 8,448,660 cannot be divided by just 1 and 8,448,660, it is a composite number.