720605616 has 20 divisors (see below), whose sum is σ = 1861564632. Its totient is φ = 240201856.

The previous prime is 720605603. The next prime is 720605629. The reversal of 720605616 is 616506027.

720605616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (720605603) and next prime (720605629).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7506261 + ... + 7506356.

Almost surely, 2^720605616 is an apocalyptic number.

It is an amenable number.

720605616 is an abundant number, since it is smaller than the sum of its proper divisors (1140959016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720605616 is a wasteful number, since it uses less digits than its factorization.

720605616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012628 (or 15012622 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 720605616 is about 26844.0983458190. The cubic root of 720605616 is about 896.5321761470.

The spelling of 720605616 in words is "seven hundred twenty million, six hundred five thousand, six hundred sixteen".