868806784 has 32 divisors (see below), whose sum is σ = 1806085440. Its totient is φ = 415514880.

The previous prime is 868806781. The next prime is 868806821. The reversal of 868806784 is 487608868.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (868806781) 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, 144612 + ... + 150499.

It is an arithmetic number, because the mean of its divisors is an integer number (56440170).

Almost surely, 2^868806784 is an apocalyptic number.

It is an amenable number.

868806784 is an abundant number, since it is smaller than the sum of its proper divisors (937278656).

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

868806784 is a wasteful number, since it uses less digits than its factorization.

868806784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295148 (or 295136 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 55.

The square root of 868806784 is about 29475.5285618426. The cubic root of 868806784 is about 954.2036375251.

The spelling of 868806784 in words is "eight hundred sixty-eight million, eight hundred six thousand, seven hundred eighty-four".