556788961 has 8 divisors (see below), whose sum is σ = 569233440. Its totient is φ = 544466208.

The previous prime is 556788941. The next prime is 556788989. The reversal of 556788961 is 169887655.

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

It is a cyclic number.

It is not a de Polignac number, because 556788961 - 2⁷ = 556788833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556788941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21151 + ... + 39508.

It is an arithmetic number, because the mean of its divisors is an integer number (71154180).

Almost surely, 2^556788961 is an apocalyptic number.

It is an amenable number.

556788961 is a deficient number, since it is larger than the sum of its proper divisors (12444479).

556788961 is a wasteful number, since it uses less digits than its factorization.

556788961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60863.

The product of its digits is 3628800, while the sum is 55.

The square root of 556788961 is about 23596.3760141256. The cubic root of 556788961 is about 822.6786096593.

The spelling of 556788961 in words is "five hundred fifty-six million, seven hundred eighty-eight thousand, nine hundred sixty-one".