556634 has 16 divisors (see below), whose sum is σ = 913920. Its totient is φ = 252720.

The previous prime is 556627. The next prime is 556639. The reversal of 556634 is 436655.

556634 = T₇₇ + T₇₈ + ... + T₁₅₅.

It is a junction number, because it is equal to n+sod(n) for n = 556597 and 556606.

It is not an unprimeable number, because it can be changed into a prime (556639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (57120).

2⁵⁵⁶⁶³⁴ is an apocalyptic number.

556634 is a deficient number, since it is larger than the sum of its proper divisors (357286).

556634 is a wasteful number, since it uses less digits than its factorization.

556634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its digits is 10800, while the sum is 29.

The square root of 556634 is about 746.0790842799. The cubic root of 556634 is about 82.2602282159.

The spelling of 556634 in words is "five hundred fifty-six thousand, six hundred thirty-four".