556765 has 16 divisors (see below), whose sum is σ = 746496. Its totient is φ = 395200.

The previous prime is 556763. The next prime is 556769. The reversal of 556765 is 567655.

It is not a de Polignac number, because 556765 - 2¹ = 556763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556763) 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 15 ways as a sum of consecutive naturals, for example, 2820 + ... + 3010.

It is an arithmetic number, because the mean of its divisors is an integer number (46656).

2⁵⁵⁶⁷⁶⁵ is an apocalyptic number.

556765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

556765 is a deficient number, since it is larger than the sum of its proper divisors (189731).

556765 is a wasteful number, since it uses less digits than its factorization.

556765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260.

The product of its digits is 31500, while the sum is 34.

The square root of 556765 is about 746.1668714168. The cubic root of 556765 is about 82.2666808369.

The spelling of 556765 in words is "five hundred fifty-six thousand, seven hundred sixty-five".