556413666 has 16 divisors (see below), whose sum is σ = 1117689600. Its totient is φ = 184660848.

The previous prime is 556413653. The next prime is 556413707. The reversal of 556413666 is 666314655.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201106 + ... + 203853.

It is an arithmetic number, because the mean of its divisors is an integer number (69855600).

Almost surely, 2^556413666 is an apocalyptic number.

556413666 is an abundant number, since it is smaller than the sum of its proper divisors (561275934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556413666 is a wasteful number, since it uses less digits than its factorization.

556413666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405193.

The product of its digits is 388800, while the sum is 42.

The square root of 556413666 is about 23588.4222872154. The cubic root of 556413666 is about 822.4937301777.

The spelling of 556413666 in words is "five hundred fifty-six million, four hundred thirteen thousand, six hundred sixty-six".