The number 861,696 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 17 18 22 24 32 33 34 36 44 48 51 64 66 68 72 88 96 99 102 128 132 136 144 153 176 187 192 198 204 256 264 272 288 306 352 374 384 396 408 512 528 544 561 576 612 704 748 768 792 816 1,056 1,088 1,122 1,152 1,224 1,408 1,496 1,536 1,584 1,632 1,683 2,112 2,176 2,244 2,304 2,448 2,816 2,992 3,168 3,264 3,366 4,224 4,352 4,488 4,608 4,896 5,632 5,984 6,336 6,528 6,732 8,448 8,704 8,976 9,792 11,968 12,672 13,056 13,464 16,896 17,952 19,584 23,936 25,344 26,112 26,928 35,904 39,168 47,872 50,688 53,856 71,808 78,336 95,744 107,712 143,616 215,424 287,232 430,848 and 861,696, with no remainder.
Since 861,696 cannot be divided by just 1 and 861,696, it is a composite number.