The number 6,700,800 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 96 100 120 128 150 160 192 200 240 256 300 320 349 384 400 480 600 640 698 768 800 960 1,047 1,200 1,280 1,396 1,600 1,745 1,920 2,094 2,400 2,792 3,200 3,490 3,840 4,188 4,800 5,235 5,584 6,400 6,980 8,376 8,725 9,600 10,470 11,168 13,960 16,752 17,450 19,200 20,940 22,336 26,175 27,920 33,504 34,900 41,880 44,672 52,350 55,840 67,008 69,800 83,760 89,344 104,700 111,680 134,016 139,600 167,520 209,400 223,360 268,032 279,200 335,040 418,800 446,720 558,400 670,080 837,600 1,116,800 1,340,160 1,675,200 2,233,600 3,350,400 and 6,700,800, with no remainder.
Since 6,700,800 cannot be divided by just 1 and 6,700,800, it is a composite number.