566431563 has 4 divisors (see below), whose sum is σ = 755242088. Its totient is φ = 377621040.

The previous prime is 566431531. The next prime is 566431573. The reversal of 566431563 is 365134665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 566431563 - 2⁵ = 566431531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566431513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94405258 + ... + 94405263.

It is an arithmetic number, because the mean of its divisors is an integer number (188810522).

Almost surely, 2^566431563 is an apocalyptic number.

566431563 is a deficient number, since it is larger than the sum of its proper divisors (188810525).

566431563 is a wasteful number, since it uses less digits than its factorization.

566431563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188810524.

The product of its digits is 194400, while the sum is 39.

The square root of 566431563 is about 23799.8227514408. The cubic root of 566431563 is about 827.4005687949.

The spelling of 566431563 in words is "five hundred sixty-six million, four hundred thirty-one thousand, five hundred sixty-three".