556555665 has 32 divisors (see below), whose sum is σ = 935865216. Its totient is φ = 282078720.

The previous prime is 556555663. The next prime is 556555687. The reversal of 556555665 is 566555655.

It is not a de Polignac number, because 556555665 - 2¹ = 556555663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (556555661) 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 31 ways as a sum of consecutive naturals, for example, 12205 + ... + 35525.

It is an arithmetic number, because the mean of its divisors is an integer number (29245788).

Almost surely, 2^556555665 is an apocalyptic number.

It is an amenable number.

556555665 is a deficient number, since it is larger than the sum of its proper divisors (379309551).

556555665 is a wasteful number, since it uses less digits than its factorization.

556555665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23409.

The product of its digits is 3375000, while the sum is 48.

The square root of 556555665 is about 23591.4320252078. The cubic root of 556555665 is about 822.5636921265.

The spelling of 556555665 in words is "five hundred fifty-six million, five hundred fifty-five thousand, six hundred sixty-five".