A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6201360 can be evenly divided by 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 29 30 33 36 40 44 45 48 54 55 58 60 66 72 80 81 87 88 90 99 108 110 116 120 132 135 144 145 162 165 174 176 180 198 216 220 232 240 243 261 264 270 290 297 319 324 330 348 360 396 405 432 435 440 464 486 495 522 528 540 580 594 638 648 660 696 720 783 792 810 870 880 891 957 972 990 1,044 1,080 1,160 1,188 1,215 1,276 1,296 1,305 1,320 1,392 1,485 1,566 1,584 1,595 1,620 1,740 1,782 1,914 1,944 1,980 2,088 2,160 2,320 2,349 2,376 2,430 2,552 2,610 2,640 2,673 2,871 2,970 3,132 3,190 3,240 3,480 3,564 3,828 3,888 3,915 3,960 4,176 4,455 4,698 4,752 4,785 4,860 5,104 5,220 5,346 5,742 5,940 6,264 6,380 6,480 6,960 7,047 7,128 7,656 7,830 7,920 8,613 8,910 9,396 9,570 9,720 10,440 10,692 11,484 11,745 11,880 12,528 12,760 13,365 14,094 14,256 14,355 15,312 15,660 17,226 17,820 18,792 19,140 19,440 20,880 21,384 22,968 23,490 23,760 25,520 25,839 26,730 28,188 28,710 31,320 34,452 35,235 35,640 37,584 38,280 42,768 43,065 45,936 46,980 51,678 53,460 56,376 57,420 62,640 68,904 70,470 71,280 76,560 77,517 86,130 93,960 103,356 106,920 112,752 114,840 129,195 137,808 140,940 155,034 172,260 187,920 206,712 213,840 229,680 258,390 281,880 310,068 344,520 387,585 413,424 516,780 563,760 620,136 689,040 775,170 1,033,560 1,240,272 1,550,340 2,067,120 3,100,680 and 6,201,360, with no remainder.
Since 6,201,360 cannot be divided by just 1 and 6,201,360, it is not a prime number.