722558556 has 96 divisors (see below), whose sum is σ = 1912476160. Its totient is φ = 238820400.

The previous prime is 722558537. The next prime is 722558563. The reversal of 722558556 is 655855227.

722558556 is a `hidden beast` number, since 72 + 25 + 5 + 8 + 556 = 666.

722558556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1320675 + ... + 1321221.

Almost surely, 2^722558556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722558556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956238080).

722558556 is an abundant number, since it is smaller than the sum of its proper divisors (1189917604).

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

722558556 is a wasteful number, since it uses less digits than its factorization.

722558556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 703 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 722558556 is about 26880.4493266017. The cubic root of 722558556 is about 897.3413539571.

The spelling of 722558556 in words is "seven hundred twenty-two million, five hundred fifty-eight thousand, five hundred fifty-six".