A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5688072 can be evenly divided by 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 59 72 78 103 104 117 118 156 177 206 234 236 309 312 354 412 468 472 531 618 708 767 824 927 936 1,062 1,236 1,339 1,416 1,534 1,854 2,124 2,301 2,472 2,678 3,068 3,708 4,017 4,248 4,602 5,356 6,077 6,136 6,903 7,416 8,034 9,204 10,712 12,051 12,154 13,806 16,068 18,231 18,408 24,102 24,308 27,612 32,136 36,462 48,204 48,616 54,693 55,224 72,924 79,001 96,408 109,386 145,848 158,002 218,772 237,003 316,004 437,544 474,006 632,008 711,009 948,012 1,422,018 1,896,024 2,844,036 and 5,688,072, with no remainder.
Since 5,688,072 cannot be divided by just 1 and 5,688,072, it is not a prime number.