556055666 has 8 divisors (see below), whose sum is σ = 834264684. Its totient is φ = 277967440.

The previous prime is 556055651. The next prime is 556055671. The reversal of 556055666 is 666550655.

It can be written as a sum of positive squares in 2 ways, for example, as 485982025 + 70073641 = 22045^2 + 8371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17645 + ... + 37728.

Almost surely, 2^556055666 is an apocalyptic number.

556055666 is a deficient number, since it is larger than the sum of its proper divisors (278209018).

556055666 is a wasteful number, since it uses less digits than its factorization.

556055666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60396.

The product of its (nonzero) digits is 810000, while the sum is 44.

The square root of 556055666 is about 23580.8325976841. The cubic root of 556055666 is about 822.3172931448.

The spelling of 556055666 in words is "five hundred fifty-six million, fifty-five thousand, six hundred sixty-six".