556956018 has 12 divisors (see below), whose sum is σ = 1206738078. Its totient is φ = 185652000.

The previous prime is 556956011. The next prime is 556956019. The reversal of 556956018 is 810659655.

It is a happy number.

556956018 is a `hidden beast` number, since 556 + 95 + 6 + 0 + 1 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 451010169 + 105945849 = 21237^2 + 10293^2 .

It is not an unprimeable number, because it can be changed into a prime (556956011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15470983 + ... + 15471018.

Almost surely, 2^556956018 is an apocalyptic number.

556956018 is an abundant number, since it is smaller than the sum of its proper divisors (649782060).

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

556956018 is a wasteful number, since it uses less digits than its factorization.

556956018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30942009 (or 30942006 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 556956018 is about 23599.9156354424. The cubic root of 556956018 is about 822.7608792967.

The spelling of 556956018 in words is "five hundred fifty-six million, nine hundred fifty-six thousand, eighteen".