556863 has 4 divisors (see below), whose sum is σ = 742488. Its totient is φ = 371240.

The previous prime is 556861. The next prime is 556867. The reversal of 556863 is 368655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 556863 - 2¹ = 556861 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556861) 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, 92808 + ... + 92813.

It is an arithmetic number, because the mean of its divisors is an integer number (185622).

2⁵⁵⁶⁸⁶³ is an apocalyptic number.

556863 is a deficient number, since it is larger than the sum of its proper divisors (185625).

556863 is a wasteful number, since it uses less digits than its factorization.

556863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185624.

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

The square root of 556863 is about 746.2325374841. The cubic root of 556863 is about 82.2715073267.

The spelling of 556863 in words is "five hundred fifty-six thousand, eight hundred sixty-three".