556659 has 16 divisors (see below), whose sum is σ = 842400. Its totient is φ = 363168.

The previous prime is 556651. The next prime is 556679. The reversal of 556659 is 956655.

It is not a de Polignac number, because 556659 - 2³ = 556651 is a prime.

556659 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 556659.

It is not an unprimeable number, because it can be changed into a prime (556651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2⁵⁵⁶⁶⁵⁹ is an apocalyptic number.

556659 is a deficient number, since it is larger than the sum of its proper divisors (285741).

556659 is a wasteful number, since it uses less digits than its factorization.

556659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 445 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 556659 is about 746.0958383479. The cubic root of 556659 is about 82.2614597103.

It can be divided in two parts, 5566 and 59, that added together give a square (5625 = 75²).

The spelling of 556659 in words is "five hundred fifty-six thousand, six hundred fifty-nine".