566478561 has 12 divisors (see below), whose sum is σ = 830211536. Its totient is φ = 343320120.

The previous prime is 566478551. The next prime is 566478581. The reversal of 566478561 is 165874665.

It is not a de Polignac number, because 566478561 - 2²² = 562284257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 566478561.

It is not an unprimeable number, because it can be changed into a prime (566478511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 779911 + ... + 780636.

Almost surely, 2^566478561 is an apocalyptic number.

It is an amenable number.

566478561 is a deficient number, since it is larger than the sum of its proper divisors (263732975).

566478561 is a wasteful number, since it uses less digits than its factorization.

566478561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560572 (or 1560561 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 566478561 is about 23800.8100912553. The cubic root of 566478561 is about 827.4234518750.

The spelling of 566478561 in words is "five hundred sixty-six million, four hundred seventy-eight thousand, five hundred sixty-one".