A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6163020 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 101 108 113 135 180 202 226 270 303 339 404 452 505 540 565 606 678 909 1,010 1,017 1,130 1,212 1,356 1,515 1,695 1,818 2,020 2,034 2,260 2,727 3,030 3,051 3,390 3,636 4,068 4,545 5,085 5,454 6,060 6,102 6,780 9,090 10,170 10,908 11,413 12,204 13,635 15,255 18,180 20,340 22,826 27,270 30,510 34,239 45,652 54,540 57,065 61,020 68,478 102,717 114,130 136,956 171,195 205,434 228,260 308,151 342,390 410,868 513,585 616,302 684,780 1,027,170 1,232,604 1,540,755 2,054,340 3,081,510 and 6,163,020, with no remainder.
Since 6,163,020 cannot be divided by just 1 and 6,163,020, it is not a prime number.