A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2707560 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 23 24 27 30 36 40 45 46 54 60 69 72 90 92 108 109 115 120 135 138 180 184 207 216 218 230 270 276 327 345 360 414 436 460 540 545 552 621 654 690 828 872 920 981 1,035 1,080 1,090 1,242 1,308 1,380 1,635 1,656 1,962 2,070 2,180 2,484 2,507 2,616 2,760 2,943 3,105 3,270 3,924 4,140 4,360 4,905 4,968 5,014 5,886 6,210 6,540 7,521 7,848 8,280 9,810 10,028 11,772 12,420 12,535 13,080 14,715 15,042 19,620 20,056 22,563 23,544 24,840 25,070 29,430 30,084 37,605 39,240 45,126 50,140 58,860 60,168 67,689 75,210 90,252 100,280 112,815 117,720 135,378 150,420 180,504 225,630 270,756 300,840 338,445 451,260 541,512 676,890 902,520 1,353,780 and 2,707,560, with no remainder.
Since 2,707,560 cannot be divided by just 1 and 2,707,560, it is not a prime number.