556788897 has 80 divisors (see below), whose sum is σ = 998186112. Its totient is φ = 302641920.

The previous prime is 556788889. The next prime is 556788917. The reversal of 556788897 is 798887655.

556788897 is a `hidden beast` number, since 556 + 78 + 8 + 8 + 9 + 7 = 666.

556788897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556788897 - 2³ = 556788889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (556788877) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 999343 + ... + 999899.

Almost surely, 2^556788897 is an apocalyptic number.

It is an amenable number.

556788897 is a deficient number, since it is larger than the sum of its proper divisors (441397215).

556788897 is a wasteful number, since it uses less digits than its factorization.

556788897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 651 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The square root of 556788897 is about 23596.3746579851. The cubic root of 556788897 is about 822.6785781385.

The spelling of 556788897 in words is "five hundred fifty-six million, seven hundred eighty-eight thousand, eight hundred ninety-seven".