A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 8801870 can be evenly divided by 1 2 5 7 10 11 14 22 23 35 46 49 55 70 71 77 98 110 115 142 154 161 230 245 253 322 355 385 490 497 506 539 710 770 781 805 994 1,078 1,127 1,265 1,562 1,610 1,633 1,771 2,254 2,485 2,530 2,695 3,266 3,479 3,542 3,905 4,970 5,390 5,467 5,635 6,958 7,810 8,165 8,855 10,934 11,270 11,431 12,397 16,330 17,395 17,710 17,963 22,862 24,794 27,335 34,790 35,926 38,269 54,670 57,155 61,985 76,538 80,017 89,815 114,310 123,970 125,741 160,034 179,630 191,345 251,482 382,690 400,085 628,705 800,170 880,187 1,257,410 1,760,374 4,400,935 and 8,801,870, with no remainder.
Since 8,801,870 cannot be divided by just 1 and 8,801,870, it is not a prime number.