556879 has 4 divisors (see below), whose sum is σ = 560584. Its totient is φ = 553176.

The previous prime is 556867. The next prime is 556883. The reversal of 556879 is 978655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978655 = 5 ⋅195731.

It is a cyclic number.

It is not a de Polignac number, because 556879 - 2¹³ = 548687 is a prime.

It is a super-2 number, since 2×556879² = 620228441282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (140146).

2⁵⁵⁶⁸⁷⁹ is an apocalyptic number.

556879 is a deficient number, since it is larger than the sum of its proper divisors (3705).

556879 is a wasteful number, since it uses less digits than its factorization.

556879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704.

The product of its digits is 75600, while the sum is 40.

The square root of 556879 is about 746.2432579260. The cubic root of 556879 is about 82.2722952712.

It can be divided in two parts, 55687 and 9, that added together give a square (55696 = 236²).

The spelling of 556879 in words is "five hundred fifty-six thousand, eight hundred seventy-nine".