720564432 has 40 divisors (see below), whose sum is σ = 2127381696. Its totient is φ = 205875456.

The previous prime is 720564389. The next prime is 720564433. The reversal of 720564432 is 234465027.

720564432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 720564393 and 720564402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720564433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071933 + ... + 1072604.

Almost surely, 2^720564432 is an apocalyptic number.

It is an amenable number.

720564432 is an abundant number, since it is smaller than the sum of its proper divisors (1406817264).

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

720564432 is a wasteful number, since it uses less digits than its factorization.

720564432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144555 (or 2144549 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 720564432 is about 26843.3312388757. The cubic root of 720564432 is about 896.5150963076.

The spelling of 720564432 in words is "seven hundred twenty million, five hundred sixty-four thousand, four hundred thirty-two".