A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2036700 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 25 30 31 36 45 50 60 62 73 75 90 93 100 124 146 150 155 180 186 219 225 279 292 300 310 365 372 438 450 465 558 620 657 730 775 876 900 930 1,095 1,116 1,314 1,395 1,460 1,550 1,825 1,860 2,190 2,263 2,325 2,628 2,790 3,100 3,285 3,650 4,380 4,526 4,650 5,475 5,580 6,570 6,789 6,975 7,300 9,052 9,300 10,950 11,315 13,140 13,578 13,950 16,425 20,367 21,900 22,630 27,156 27,900 32,850 33,945 40,734 45,260 56,575 65,700 67,890 81,468 101,835 113,150 135,780 169,725 203,670 226,300 339,450 407,340 509,175 678,900 1,018,350 and 2,036,700, with no remainder.
Since 2,036,700 cannot be divided by just 1 and 2,036,700, it is not a prime number.