The number 535,680 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 32 36 40 45 48 54 60 62 64 72 80 90 93 96 108 120 124 128 135 144 155 160 180 186 192 216 240 248 270 279 288 310 320 360 372 384 432 465 480 496 540 558 576 620 640 720 744 837 864 930 960 992 1,080 1,116 1,152 1,240 1,395 1,440 1,488 1,674 1,728 1,860 1,920 1,984 2,160 2,232 2,480 2,790 2,880 2,976 3,348 3,456 3,720 3,968 4,185 4,320 4,464 4,960 5,580 5,760 5,952 6,696 7,440 8,370 8,640 8,928 9,920 11,160 11,904 13,392 14,880 16,740 17,280 17,856 19,840 22,320 26,784 29,760 33,480 35,712 44,640 53,568 59,520 66,960 89,280 107,136 133,920 178,560 267,840 and 535,680, with no remainder.
Since 535,680 cannot be divided by just 1 and 535,680, it is a composite number.