A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5364768 can be evenly divided by 1 2 3 4 6 8 12 16 24 29 32 41 47 48 58 82 87 94 96 116 123 141 164 174 188 232 246 282 328 348 376 464 492 564 656 696 752 928 984 1,128 1,189 1,312 1,363 1,392 1,504 1,927 1,968 2,256 2,378 2,726 2,784 3,567 3,854 3,936 4,089 4,512 4,756 5,452 5,781 7,134 7,708 8,178 9,512 10,904 11,562 14,268 15,416 16,356 19,024 21,808 23,124 28,536 30,832 32,712 38,048 43,616 46,248 55,883 57,072 61,664 65,424 92,496 111,766 114,144 130,848 167,649 184,992 223,532 335,298 447,064 670,596 894,128 1,341,192 1,788,256 2,682,384 and 5,364,768, with no remainder.
Since 5,364,768 cannot be divided by just 1 and 5,364,768, it is not a prime number.