765685040 has 80 divisors (see below), whose sum is σ = 1810839456. Its totient is φ = 301056000.

The previous prime is 765685013. The next prime is 765685051. The reversal of 765685040 is 40586567.

765685040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1559195 + ... + 1559685.

Almost surely, 2^765685040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765685040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905419728).

765685040 is an abundant number, since it is smaller than the sum of its proper divisors (1045154416).

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

765685040 is a wasteful number, since it uses less digits than its factorization.

765685040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 765685040 is about 27671.0144374940. The cubic root of 765685040 is about 914.8503403190.

The spelling of 765685040 in words is "seven hundred sixty-five million, six hundred eighty-five thousand, forty".