A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3562020 can be evenly divided by 1 2 3 4 5 6 7 9 10 11 12 14 15 18 20 21 22 28 30 33 35 36 42 44 45 55 60 63 66 70 77 84 90 99 105 110 126 132 140 154 165 180 198 210 220 231 252 257 308 315 330 385 396 420 462 495 514 630 660 693 770 771 924 990 1,028 1,155 1,260 1,285 1,386 1,540 1,542 1,799 1,980 2,310 2,313 2,570 2,772 2,827 3,084 3,465 3,598 3,855 4,620 4,626 5,140 5,397 5,654 6,930 7,196 7,710 8,481 8,995 9,252 10,794 11,308 11,565 13,860 14,135 15,420 16,191 16,962 17,990 19,789 21,588 23,130 25,443 26,985 28,270 32,382 33,924 35,980 39,578 42,405 46,260 50,886 53,970 56,540 59,367 64,764 79,156 80,955 84,810 98,945 101,772 107,940 118,734 127,215 161,910 169,620 178,101 197,890 237,468 254,430 296,835 323,820 356,202 395,780 508,860 593,670 712,404 890,505 1,187,340 1,781,010 and 3,562,020, with no remainder.
Since 3,562,020 cannot be divided by just 1 and 3,562,020, it is not a prime number.