The number 8,704,584 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 19 21 24 27 28 36 38 42 54 56 57 63 72 76 81 84 101 108 114 126 133 152 162 168 171 189 202 216 228 252 266 303 324 342 378 399 404 456 504 513 532 567 606 648 684 707 756 798 808 909 1,026 1,064 1,134 1,197 1,212 1,368 1,414 1,512 1,539 1,596 1,818 1,919 2,052 2,121 2,268 2,394 2,424 2,727 2,828 3,078 3,192 3,591 3,636 3,838 4,104 4,242 4,536 4,788 5,454 5,656 5,757 6,156 6,363 7,182 7,272 7,676 8,181 8,484 9,576 10,773 10,908 11,514 12,312 12,726 13,433 14,364 15,352 16,362 16,968 17,271 19,089 21,546 21,816 23,028 25,452 26,866 28,728 32,724 34,542 38,178 40,299 43,092 46,056 50,904 51,813 53,732 57,267 65,448 69,084 76,356 80,598 86,184 103,626 107,464 114,534 120,897 138,168 152,712 155,439 161,196 207,252 229,068 241,794 310,878 322,392 362,691 414,504 458,136 483,588 621,756 725,382 967,176 1,088,073 1,243,512 1,450,764 2,176,146 2,901,528 4,352,292 and 8,704,584, with no remainder.
Since 8,704,584 cannot be divided by just 1 and 8,704,584, it is a composite number.