A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6727000 can be evenly divided by 1 2 4 5 7 8 10 14 20 25 28 31 35 40 50 56 62 70 100 124 125 140 155 175 200 217 248 250 280 310 350 434 500 620 700 775 868 875 961 1,000 1,085 1,240 1,400 1,550 1,736 1,750 1,922 2,170 3,100 3,500 3,844 3,875 4,340 4,805 5,425 6,200 6,727 7,000 7,688 7,750 8,680 9,610 10,850 13,454 15,500 19,220 21,700 24,025 26,908 27,125 31,000 33,635 38,440 43,400 48,050 53,816 54,250 67,270 96,100 108,500 120,125 134,540 168,175 192,200 217,000 240,250 269,080 336,350 480,500 672,700 840,875 961,000 1,345,400 1,681,750 3,363,500 and 6,727,000, with no remainder.
Since 6,727,000 cannot be divided by just 1 and 6,727,000, it is not a prime number.