720

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


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


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


 * The $15$th positive integer after $128$, $192$, $256$, $320$, $384$, $432$, $448$, $480$, $512$, $576$, $640$, $648$, $672$, $704$ with $7$ or more prime factors:
 * $720 = 2 \times 2 \times 2 \times 2 \times 3 \times 3 \times 5$


 * The product of consecutive integers in $2$ different ways:
 * $720 = 6 \times 5 \times 4 \times 3 \times 2 = \times 10 \times 9 \times 8$


 * The only factorial which can be expressed as the sum of two squares:
 * $6! = 12^2 + 24^2$

Also see

 * 720 is Product of Consecutive Numbers in Two Ways
 * Factorial which is Sum of Two Squares