765978633 has 24 divisors (see below), whose sum is σ = 1320056160. Its totient is φ = 437701320.

The previous prime is 765978623. The next prime is 765978641. The reversal of 765978633 is 336879567.

765978633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 765978633 - 2⁸ = 765978377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 765978633.

It is not an unprimeable number, because it can be changed into a prime (765978623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288163 + ... + 290808.

It is an arithmetic number, because the mean of its divisors is an integer number (55002340).

Almost surely, 2^765978633 is an apocalyptic number.

It is an amenable number.

765978633 is a deficient number, since it is larger than the sum of its proper divisors (554077527).

765978633 is a wasteful number, since it uses less digits than its factorization.

765978633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578994 (or 578981 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 765978633 is about 27676.3189929586. The cubic root of 765978633 is about 914.9672549421.

The spelling of 765978633 in words is "seven hundred sixty-five million, nine hundred seventy-eight thousand, six hundred thirty-three".