A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6968160 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 90 96 108 120 135 144 160 180 216 240 270 288 360 432 480 540 720 864 1,080 1,440 1,613 2,160 3,226 4,320 4,839 6,452 8,065 9,678 12,904 14,517 16,130 19,356 24,195 25,808 29,034 32,260 38,712 43,551 48,390 51,616 58,068 64,520 72,585 77,424 87,102 96,780 116,136 129,040 145,170 154,848 174,204 193,560 217,755 232,272 258,080 290,340 348,408 387,120 435,510 464,544 580,680 696,816 774,240 871,020 1,161,360 1,393,632 1,742,040 2,322,720 3,484,080 and 6,968,160, with no remainder.
Since 6,968,160 cannot be divided by just 1 and 6,968,160, it is not a prime number.