556761 has 8 divisors (see below), whose sum is σ = 774720. Its totient is φ = 354992.

The previous prime is 556753. The next prime is 556763. The reversal of 556761 is 167655.

556761 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 556761 - 2³ = 556753 is a prime.

It is a super-2 number, since 2×556761² = 619965622242, which contains 22 as substring.

556761 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (556763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3966 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (96840).

2⁵⁵⁶⁷⁶¹ is an apocalyptic number.

It is an amenable number.

556761 is a deficient number, since it is larger than the sum of its proper divisors (217959).

556761 is a wasteful number, since it uses less digits than its factorization.

556761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095.

The product of its digits is 6300, while the sum is 30.

The square root of 556761 is about 746.1641910464. The cubic root of 556761 is about 82.2664838253.

The spelling of 556761 in words is "five hundred fifty-six thousand, seven hundred sixty-one".