556836 has 36 divisors (see below), whose sum is σ = 1513008. Its totient is φ = 158928.

The previous prime is 556823. The next prime is 556841. The reversal of 556836 is 638655.

556836 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 = 556797 and 556806.

It is an unprimeable number.

556836 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (42028).

2⁵⁵⁶⁸³⁶ 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 556836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756504).

556836 is an abundant number, since it is smaller than the sum of its proper divisors (956172).

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

556836 is a wasteful number, since it uses less digits than its factorization.

556836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 959 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 556836 is about 746.2144463892. The cubic root of 556836 is about 82.2701776360.

The spelling of 556836 in words is "five hundred fifty-six thousand, eight hundred thirty-six".