720608 has 24 divisors (see below), whose sum is σ = 1621872. Its totient is φ = 308736.

The previous prime is 720607. The next prime is 720611. The reversal of 720608 is 806027.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720608.

It is not an unprimeable number, because it can be changed into a prime (720607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (67578).

2⁷²⁰⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

720608 is an abundant number, since it is smaller than the sum of its proper divisors (901264).

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

720608 is a wasteful number, since it uses less digits than its factorization.

720608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 720608 is about 848.8863292573. The cubic root of 720608 is about 89.6533164820.

The spelling of 720608 in words is "seven hundred twenty thousand, six hundred eight".