780755868 has 48 divisors (see below), whose sum is σ = 2040156160. Its totient is φ = 258198192.

The previous prime is 780755837. The next prime is 780755873. The reversal of 780755868 is 868557087.

It is a happy number.

780755868 is a `hidden beast` number, since 7 + 80 + 7 + 558 + 6 + 8 = 666.

780755868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 14746 + ... + 42177.

Almost surely, 2^780755868 is an apocalyptic number.

It is an amenable number.

780755868 is an abundant number, since it is smaller than the sum of its proper divisors (1259400292).

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

780755868 is a wasteful number, since it uses less digits than its factorization.

780755868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57063 (or 57055 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The square root of 780755868 is about 27942.0090186801. The cubic root of 780755868 is about 920.8136579368.

The spelling of 780755868 in words is "seven hundred eighty million, seven hundred fifty-five thousand, eight hundred sixty-eight".