765772 has 18 divisors (see below), whose sum is σ = 1559292. Its totient is φ = 328104.

The previous prime is 765767. The next prime is 765773. The reversal of 765772 is 277567.

It is not an unprimeable number, because it can be changed into a prime (765773) by changing a digit.

765772 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1758 + ... + 2149.

765772 is a Friedman number, since it can be written as 7*(7+7*(5^6+2)), using all its digits and the basic arithmetic operations.

2⁷⁶⁵⁷⁷² is an apocalyptic number.

It is an amenable number.

765772 is an abundant number, since it is smaller than the sum of its proper divisors (793520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

765772 is a wasteful number, since it uses less digits than its factorization.

765772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925 (or 3916 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 765772 is about 875.0839959684. The cubic root of 765772 is about 91.4884972650.

The spelling of 765772 in words is "seven hundred sixty-five thousand, seven hundred seventy-two".