The number 4,565,568 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 43 48 56 64 79 84 86 96 112 129 158 168 172 192 224 237 258 301 316 336 344 448 474 516 553 602 632 672 688 903 948 1,032 1,106 1,204 1,264 1,344 1,376 1,659 1,806 1,896 2,064 2,212 2,408 2,528 2,752 3,318 3,397 3,612 3,792 4,128 4,424 4,816 5,056 6,636 6,794 7,224 7,584 8,256 8,848 9,632 10,191 13,272 13,588 14,448 15,168 17,696 19,264 20,382 23,779 26,544 27,176 28,896 35,392 40,764 47,558 53,088 54,352 57,792 71,337 81,528 95,116 106,176 108,704 142,674 163,056 190,232 217,408 285,348 326,112 380,464 570,696 652,224 760,928 1,141,392 1,521,856 2,282,784 and 4,565,568, with no remainder.
Since 4,565,568 cannot be divided by just 1 and 4,565,568, it is a composite number.