The number 6,710,256 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 84 98 108 112 126 144 147 168 189 196 216 252 294 317 336 378 392 432 441 504 588 634 756 784 882 951 1,008 1,176 1,268 1,323 1,512 1,764 1,902 2,219 2,352 2,536 2,646 2,853 3,024 3,528 3,804 4,438 5,072 5,292 5,706 6,657 7,056 7,608 8,559 8,876 10,584 11,412 13,314 15,216 15,533 17,118 17,752 19,971 21,168 22,824 26,628 31,066 34,236 35,504 39,942 45,648 46,599 53,256 59,913 62,132 68,472 79,884 93,198 106,512 119,826 124,264 136,944 139,797 159,768 186,396 239,652 248,528 279,594 319,536 372,792 419,391 479,304 559,188 745,584 838,782 958,608 1,118,376 1,677,564 2,236,752 3,355,128 and 6,710,256, with no remainder.
Since 6,710,256 cannot be divided by just 1 and 6,710,256, it is a composite number.