720

Number
$720$ (seven hundred and twenty) is:


 * $2^4 \times 3^2 \times 5$


 * The $6$th factorial after $1, 2, 6, 24, 120$:
 * $720 = 6! = 6 \times 5 \times 4 \times 3 \times 2 \times 1$