556166657 has 16 divisors (see below), whose sum is σ = 588373632. Its totient is φ = 524684160.

The previous prime is 556166641. The next prime is 556166659. The reversal of 556166657 is 756661655.

It is a cyclic number.

It is not a de Polignac number, because 556166657 - 2⁴ = 556166641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556166659) 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 15 ways as a sum of consecutive naturals, for example, 593093 + ... + 594029.

It is an arithmetic number, because the mean of its divisors is an integer number (36773352).

Almost surely, 2^556166657 is an apocalyptic number.

It is an amenable number.

556166657 is a deficient number, since it is larger than the sum of its proper divisors (32206975).

556166657 is a wasteful number, since it uses less digits than its factorization.

556166657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288.

The product of its digits is 1134000, while the sum is 47.

The square root of 556166657 is about 23583.1858958878. The cubic root of 556166657 is about 822.3720021438.

The spelling of 556166657 in words is "five hundred fifty-six million, one hundred sixty-six thousand, six hundred fifty-seven".