The number 6,750,576 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 37 42 48 56 63 72 74 84 111 112 126 144 148 168 181 222 252 259 296 333 336 362 444 504 518 543 592 666 724 777 888 1,008 1,036 1,086 1,267 1,332 1,448 1,554 1,629 1,776 2,072 2,172 2,331 2,534 2,664 2,896 3,108 3,258 3,801 4,144 4,344 4,662 5,068 5,328 6,216 6,516 6,697 7,602 8,688 9,324 10,136 11,403 12,432 13,032 13,394 15,204 18,648 20,091 20,272 22,806 26,064 26,788 30,408 37,296 40,182 45,612 46,879 53,576 60,273 60,816 80,364 91,224 93,758 107,152 120,546 140,637 160,728 182,448 187,516 241,092 281,274 321,456 375,032 421,911 482,184 562,548 750,064 843,822 964,368 1,125,096 1,687,644 2,250,192 3,375,288 and 6,750,576, with no remainder.
Since 6,750,576 cannot be divided by just 1 and 6,750,576, it is a composite number.