565985077 has 4 divisors (see below), whose sum is σ = 646840096. Its totient is φ = 485130060.

The previous prime is 565985071. The next prime is 565985099. The reversal of 565985077 is 770589565.

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 not a de Polignac number, because 565985077 - 2²³ = 557596469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565985071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40427499 + ... + 40427512.

It is an arithmetic number, because the mean of its divisors is an integer number (161710024).

Almost surely, 2^565985077 is an apocalyptic number.

It is an amenable number.

565985077 is a deficient number, since it is larger than the sum of its proper divisors (80855019).

565985077 is an equidigital number, since it uses as much as digits as its factorization.

565985077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80855018.

The product of its (nonzero) digits is 2646000, while the sum is 52.

The square root of 565985077 is about 23790.4408744353. The cubic root of 565985077 is about 827.1831139412.

The spelling of 565985077 in words is "five hundred sixty-five million, nine hundred eighty-five thousand, seventy-seven".