720604 has 12 divisors (see below), whose sum is σ = 1288224. Its totient is φ = 352544.

The previous prime is 720571. The next prime is 720607. The reversal of 720604 is 406027.

It is a congruent number.

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, 1729 + ... + 2104.

It is an arithmetic number, because the mean of its divisors is an integer number (107352).

2⁷²⁰⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

720604 is a deficient number, since it is larger than the sum of its proper divisors (567620).

720604 is a wasteful number, since it uses less digits than its factorization.

720604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 3882 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 720604 is about 848.8839732260. The cubic root of 720604 is about 89.6531505971.

The spelling of 720604 in words is "seven hundred twenty thousand, six hundred four".