765885880 has 16 divisors (see below), whose sum is σ = 1723243320. Its totient is φ = 306354336.

The previous prime is 765885871. The next prime is 765885889. The reversal of 765885880 is 88588567.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (765885871) and next prime (765885889).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765885889) 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, 9573534 + ... + 9573613.

Almost surely, 2^765885880 is an apocalyptic number.

It is an amenable number.

765885880 is an abundant number, since it is smaller than the sum of its proper divisors (957357440).

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

765885880 is a wasteful number, since it uses less digits than its factorization.

765885880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19147158 (or 19147154 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 55.

The square root of 765885880 is about 27674.6432678002. The cubic root of 765885880 is about 914.9303220653.

The spelling of 765885880 in words is "seven hundred sixty-five million, eight hundred eighty-five thousand, eight hundred eighty".