556787 has 12 divisors (see below), whose sum is σ = 707256. Its totient is φ = 433440.

The previous prime is 556781. The next prime is 556789. The reversal of 556787 is 787655.

It is not a de Polignac number, because 556787 - 2⁶ = 556723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556787.

It is not an unprimeable number, because it can be changed into a prime (556781) 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 11 ways as a sum of consecutive naturals, for example, 23 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (58938).

2⁵⁵⁶⁷⁸⁷ is an apocalyptic number.

556787 is a deficient number, since it is larger than the sum of its proper divisors (150469).

556787 is a wasteful number, since it uses less digits than its factorization.

556787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1051 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 556787 is about 746.1816132819. The cubic root of 556787 is about 82.2677643839.

The spelling of 556787 in words is "five hundred fifty-six thousand, seven hundred eighty-seven".