565163761 has 4 divisors (see below), whose sum is σ = 565304832. Its totient is φ = 565022692.

The previous prime is 565163723. The next prime is 565163777. The reversal of 565163761 is 167361565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-565163761 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565163701) 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, 64345 + ... + 72598.

It is an arithmetic number, because the mean of its divisors is an integer number (141326208).

Almost surely, 2^565163761 is an apocalyptic number.

It is an amenable number.

565163761 is a deficient number, since it is larger than the sum of its proper divisors (141071).

565163761 is a wasteful number, since it uses less digits than its factorization.

565163761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141070.

The product of its digits is 113400, while the sum is 40.

The square root of 565163761 is about 23773.1731369626. The cubic root of 565163761 is about 826.7828044391.

The spelling of 565163761 in words is "five hundred sixty-five million, one hundred sixty-three thousand, seven hundred sixty-one".