556724 has 24 divisors (see below), whose sum is σ = 1135680. Its totient is φ = 233856.

The previous prime is 556723. The next prime is 556727. The reversal of 556724 is 427655.

It is a super-2 number, since 2×556724² = 619883224352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 1820.

It is an arithmetic number, because the mean of its divisors is an integer number (47320).

2⁵⁵⁶⁷²⁴ is an apocalyptic number.

It is an amenable number.

556724 is an abundant number, since it is smaller than the sum of its proper divisors (578956).

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

556724 is a wasteful number, since it uses less digits than its factorization.

556724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 405 counting only the distinct ones).

The product of its digits is 8400, while the sum is 29.

The square root of 556724 is about 746.1393971638. The cubic root of 556724 is about 82.2646614231.

The spelling of 556724 in words is "five hundred fifty-six thousand, seven hundred twenty-four".