A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2695392 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 72 84 96 98 112 126 144 147 168 191 196 224 252 288 294 336 382 392 441 504 573 588 672 764 784 882 1,008 1,146 1,176 1,337 1,528 1,568 1,719 1,764 2,016 2,292 2,352 2,674 3,056 3,438 3,528 4,011 4,584 4,704 5,348 6,112 6,876 7,056 8,022 9,168 9,359 10,696 12,033 13,752 14,112 16,044 18,336 18,718 21,392 24,066 27,504 28,077 32,088 37,436 42,784 48,132 55,008 56,154 64,176 74,872 84,231 96,264 112,308 128,352 149,744 168,462 192,528 224,616 299,488 336,924 385,056 449,232 673,848 898,464 1,347,696 and 2,695,392, with no remainder.
Since 2,695,392 cannot be divided by just 1 and 2,695,392, it is not a prime number.