The number 6,745,410 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 43 45 54 63 70 83 86 90 105 126 129 135 166 189 210 215 249 258 270 301 315 378 387 415 430 498 581 602 630 645 747 774 830 903 945 1,161 1,162 1,245 1,290 1,494 1,505 1,743 1,806 1,890 1,935 2,241 2,322 2,490 2,709 2,905 3,010 3,486 3,569 3,735 3,870 4,482 4,515 5,229 5,418 5,805 5,810 7,138 7,470 8,127 8,715 9,030 10,458 10,707 11,205 11,610 13,545 15,687 16,254 17,430 17,845 21,414 22,410 24,983 26,145 27,090 31,374 32,121 35,690 40,635 49,966 52,290 53,535 64,242 74,949 78,435 81,270 96,363 107,070 124,915 149,898 156,870 160,605 192,726 224,847 249,830 321,210 374,745 449,694 481,815 674,541 749,490 963,630 1,124,235 1,349,082 2,248,470 3,372,705 and 6,745,410, with no remainder.
Since 6,745,410 cannot be divided by just 1 and 6,745,410, it is a composite number.