765563 has 4 divisors (see below), whose sum is σ = 767448. Its totient is φ = 763680.

The previous prime is 765539. The next prime is 765577. The reversal of 765563 is 365567.

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

It is a cyclic number.

It is not a de Polignac number, because 765563 - 2⁸ = 765307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765503) 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, 53 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (191862).

2⁷⁶⁵⁵⁶³ is an apocalyptic number.

765563 is a deficient number, since it is larger than the sum of its proper divisors (1885).

765563 is a wasteful number, since it uses less digits than its factorization.

765563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884.

The product of its digits is 18900, while the sum is 32.

The square root of 765563 is about 874.9645707113. The cubic root of 765563 is about 91.4801732749.

The spelling of 765563 in words is "seven hundred sixty-five thousand, five hundred sixty-three".