The number 2,617,020 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 31 35 36 42 45 60 62 63 67 70 84 90 93 105 124 126 134 140 155 180 186 201 210 217 252 268 279 310 315 335 372 402 420 434 465 469 558 603 620 630 651 670 804 868 930 938 1,005 1,085 1,116 1,206 1,260 1,302 1,340 1,395 1,407 1,860 1,876 1,953 2,010 2,077 2,170 2,345 2,412 2,604 2,790 2,814 3,015 3,255 3,906 4,020 4,154 4,221 4,340 4,690 5,580 5,628 6,030 6,231 6,510 7,035 7,812 8,308 8,442 9,380 9,765 10,385 12,060 12,462 13,020 14,070 14,539 16,884 18,693 19,530 20,770 21,105 24,924 28,140 29,078 31,155 37,386 39,060 41,540 42,210 43,617 58,156 62,310 72,695 74,772 84,420 87,234 93,465 124,620 130,851 145,390 174,468 186,930 218,085 261,702 290,780 373,860 436,170 523,404 654,255 872,340 1,308,510 and 2,617,020, with no remainder.
Since 2,617,020 cannot be divided by just 1 and 2,617,020, it is a composite number.