A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2061675 can be evenly divided by 1 3 5 7 9 11 15 17 21 25 33 35 45 49 51 55 63 75 77 85 99 105 119 147 153 165 175 187 225 231 245 255 275 315 357 385 425 441 495 525 539 561 595 693 735 765 825 833 935 1,071 1,155 1,225 1,275 1,309 1,575 1,617 1,683 1,785 1,925 2,205 2,475 2,499 2,695 2,805 2,975 3,465 3,675 3,825 3,927 4,165 4,675 4,851 5,355 5,775 6,545 7,497 8,085 8,415 8,925 9,163 11,025 11,781 12,495 13,475 14,025 17,325 19,635 20,825 24,255 26,775 27,489 32,725 37,485 40,425 42,075 45,815 58,905 62,475 82,467 98,175 121,275 137,445 187,425 229,075 294,525 412,335 687,225 and 2,061,675, with no remainder.
Since 2,061,675 cannot be divided by just 1 and 2,061,675, it is not a prime number.