The number 8,684,368 can be evenly divided by 1 2 4 7 8 11 14 16 19 22 28 38 44 49 53 56 76 77 88 98 106 112 133 152 154 176 196 209 212 266 304 308 371 392 418 424 532 539 583 616 742 784 836 848 931 1,007 1,064 1,078 1,166 1,232 1,463 1,484 1,672 1,862 2,014 2,128 2,156 2,332 2,597 2,926 2,968 3,344 3,724 4,028 4,081 4,312 4,664 5,194 5,852 5,936 7,049 7,448 8,056 8,162 8,624 9,328 10,241 10,388 11,077 11,704 14,098 14,896 16,112 16,324 20,482 20,776 22,154 23,408 28,196 28,567 32,648 40,964 41,552 44,308 49,343 56,392 57,134 65,296 77,539 81,928 88,616 98,686 112,784 114,268 155,078 163,856 177,232 197,372 228,536 310,156 394,744 457,072 542,773 620,312 789,488 1,085,546 1,240,624 2,171,092 4,342,184 and 8,684,368, with no remainder.
Since 8,684,368 cannot be divided by just 1 and 8,684,368, it is a composite number.