556979916 has 96 divisors (see below), whose sum is σ = 1394265600. Its totient is φ = 172730880.

The previous prime is 556979893. The next prime is 556979923. The reversal of 556979916 is 619979655.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1469415 + ... + 1469793.

It is an arithmetic number, because the mean of its divisors is an integer number (14523600).

Almost surely, 2^556979916 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 556979916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697132800).

556979916 is an abundant number, since it is smaller than the sum of its proper divisors (837285684).

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

556979916 is a wasteful number, since it uses less digits than its factorization.

556979916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 57.

The square root of 556979916 is about 23600.4219453806. The cubic root of 556979916 is about 822.7726468676.

The spelling of 556979916 in words is "five hundred fifty-six million, nine hundred seventy-nine thousand, nine hundred sixteen".