556927668 has 144 divisors (see below), whose sum is σ = 1582701120. Its totient is φ = 165063360.

The previous prime is 556927649. The next prime is 556927673. The reversal of 556927668 is 866729655.

It is a happy number.

556927668 is a `hidden beast` number, since 5 + 569 + 2 + 76 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2826946 + ... + 2827142.

It is an arithmetic number, because the mean of its divisors is an integer number (10990980).

Almost surely, 2^556927668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556927668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791350560).

556927668 is an abundant number, since it is smaller than the sum of its proper divisors (1025773452).

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

556927668 is a wasteful number, since it uses less digits than its factorization.

556927668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 272 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 556927668 is about 23599.3149900585. The cubic root of 556927668 is about 822.7469190880.

The spelling of 556927668 in words is "five hundred fifty-six million, nine hundred twenty-seven thousand, six hundred sixty-eight".