A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6775230 can be evenly divided by 1 2 3 5 6 7 10 11 14 15 21 22 30 33 35 42 49 55 66 70 77 98 105 110 147 154 165 210 231 245 294 330 385 419 462 490 539 735 770 838 1,078 1,155 1,257 1,470 1,617 2,095 2,310 2,514 2,695 2,933 3,234 4,190 4,609 5,390 5,866 6,285 8,085 8,799 9,218 12,570 13,827 14,665 16,170 17,598 20,531 23,045 27,654 29,330 32,263 41,062 43,995 46,090 61,593 64,526 69,135 87,990 96,789 102,655 123,186 138,270 161,315 193,578 205,310 225,841 307,965 322,630 451,682 483,945 615,930 677,523 967,890 1,129,205 1,355,046 2,258,410 3,387,615 and 6,775,230, with no remainder.
Since 6,775,230 cannot be divided by just 1 and 6,775,230, it is not a prime number.