765320636 has 12 divisors (see below), whose sum is σ = 1364581512. Its totient is φ = 375440208.

The previous prime is 765320609. The next prime is 765320639. The reversal of 765320636 is 636023567.

It is a self number, because there is not a number n which added to its sum of digits gives 765320636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765320639) 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, 1804790 + ... + 1805213.

It is an arithmetic number, because the mean of its divisors is an integer number (113715126).

Almost surely, 2^765320636 is an apocalyptic number.

It is an amenable number.

765320636 is a deficient number, since it is larger than the sum of its proper divisors (599260876).

765320636 is a wasteful number, since it uses less digits than its factorization.

765320636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610060 (or 3610058 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 765320636 is about 27664.4290741739. The cubic root of 765320636 is about 914.7051857596.

The spelling of 765320636 in words is "seven hundred sixty-five million, three hundred twenty thousand, six hundred thirty-six".