768705489 has 6 divisors (see below), whose sum is σ = 1110352386. Its totient is φ = 512470320.

The previous prime is 768705449. The next prime is 768705521. The reversal of 768705489 is 984507867.

768705489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 754326225 + 14379264 = 27465^2 + 3792^2 .

It is not a de Polignac number, because 768705489 - 2⁹ = 768704977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (768705449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42705852 + ... + 42705869.

It is an arithmetic number, because the mean of its divisors is an integer number (185058731).

Almost surely, 2^768705489 is an apocalyptic number.

It is an amenable number.

768705489 is a deficient number, since it is larger than the sum of its proper divisors (341646897).

768705489 is a wasteful number, since it uses less digits than its factorization.

768705489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85411727 (or 85411724 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 768705489 is about 27725.5385700621. The cubic root of 768705489 is about 916.0517190944.

The spelling of 768705489 in words is "seven hundred sixty-eight million, seven hundred five thousand, four hundred eighty-nine".