The number 4,577,664 can be evenly divided by 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 42 48 52 56 64 78 84 91 96 104 112 128 131 156 168 182 192 208 224 262 273 312 336 364 384 393 416 448 524 546 624 672 728 786 832 896 917 1,048 1,092 1,248 1,344 1,456 1,572 1,664 1,703 1,834 2,096 2,184 2,496 2,688 2,751 2,912 3,144 3,406 3,668 4,192 4,368 4,992 5,109 5,502 5,824 6,288 6,812 7,336 8,384 8,736 10,218 11,004 11,648 11,921 12,576 13,624 14,672 16,768 17,472 20,436 22,008 23,842 25,152 27,248 29,344 34,944 35,763 40,872 44,016 47,684 50,304 54,496 58,688 71,526 81,744 88,032 95,368 108,992 117,376 143,052 163,488 176,064 190,736 217,984 286,104 326,976 352,128 381,472 572,208 653,952 762,944 1,144,416 1,525,888 2,288,832 and 4,577,664, with no remainder.
Since 4,577,664 cannot be divided by just 1 and 4,577,664, it is a composite number.