Q: Is 660,720 a Prime Number?
A: No, 660,720 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 660720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 2,753 5,506 8,259 11,012 13,765 16,518 22,024 27,530 33,036 41,295 44,048 55,060 66,072 82,590 110,120 132,144 165,180 220,240 330,360 and 660,720, with no remainder.
Since 660,720 cannot be divided by just 1 and 660,720, it is not a prime number.