768905865 has 160 divisors (see below), whose sum is σ = 1753737216. Its totient is φ = 313528320.

The previous prime is 768905827. The next prime is 768905873. The reversal of 768905865 is 568509867.

It is not a de Polignac number, because 768905865 - 2⁹ = 768905353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1142169 + ... + 1142841.

Almost surely, 2^768905865 is an apocalyptic number.

It is an amenable number.

768905865 is an abundant number, since it is smaller than the sum of its proper divisors (984831351).

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

768905865 is a wasteful number, since it uses less digits than its factorization.

768905865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The square root of 768905865 is about 27729.1518983181. The cubic root of 768905865 is about 916.1313069362.

The spelling of 768905865 in words is "seven hundred sixty-eight million, nine hundred five thousand, eight hundred sixty-five".