765978648 has 32 divisors (see below), whose sum is σ = 1918244160. Its totient is φ = 254886560.

The previous prime is 765978641. The next prime is 765978649. The reversal of 765978648 is 846879567.

765978648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 765978591 and 765978600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765978641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13098 + ... + 41273.

It is an arithmetic number, because the mean of its divisors is an integer number (59945130).

Almost surely, 2^765978648 is an apocalyptic number.

It is an amenable number.

765978648 is an abundant number, since it is smaller than the sum of its proper divisors (1152265512).

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

765978648 is a wasteful number, since it uses less digits than its factorization.

765978648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54967 (or 54963 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The square root of 765978648 is about 27676.3192639484. The cubic root of 765978648 is about 914.9672609147.

The spelling of 765978648 in words is "seven hundred sixty-five million, nine hundred seventy-eight thousand, six hundred forty-eight".