568404891 has 16 divisors (see below), whose sum is σ = 842540320. Its totient is φ = 378730080.

The previous prime is 568404799. The next prime is 568404943. The reversal of 568404891 is 198404865.

568404891 is a `hidden beast` number, since 568 + 4 + 0 + 4 + 89 + 1 = 666.

568404891 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 568404891 - 2¹⁴ = 568388507 is a prime.

It is a super-2 number, since 2×568404891² = 646168240225443762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (568404091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57321 + ... + 66501.

It is an arithmetic number, because the mean of its divisors is an integer number (52658770).

Almost surely, 2^568404891 is an apocalyptic number.

568404891 is a deficient number, since it is larger than the sum of its proper divisors (274135429).

568404891 is a wasteful number, since it uses less digits than its factorization.

568404891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11483 (or 11477 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 568404891 is about 23841.2434868654. The cubic root of 568404891 is about 828.3602848167.

The spelling of 568404891 in words is "five hundred sixty-eight million, four hundred four thousand, eight hundred ninety-one".