A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5664384 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 88 96 99 108 128 132 144 149 176 192 198 216 264 288 297 298 352 384 396 432 447 528 576 594 596 704 792 864 894 1,056 1,152 1,188 1,192 1,341 1,408 1,584 1,639 1,728 1,788 2,112 2,376 2,384 2,682 3,168 3,278 3,456 3,576 4,023 4,224 4,752 4,768 4,917 5,364 6,336 6,556 7,152 8,046 9,504 9,536 9,834 10,728 12,672 13,112 14,304 14,751 16,092 19,008 19,072 19,668 21,456 26,224 28,608 29,502 32,184 38,016 39,336 42,912 44,253 52,448 57,216 59,004 64,368 78,672 85,824 88,506 104,896 118,008 128,736 157,344 171,648 177,012 209,792 236,016 257,472 314,688 354,024 472,032 514,944 629,376 708,048 944,064 1,416,096 1,888,128 2,832,192 and 5,664,384, with no remainder.
Since 5,664,384 cannot be divided by just 1 and 5,664,384, it is not a prime number.