864642716 has 12 divisors (see below), whose sum is σ = 1729285488. Its totient is φ = 370561152.

The previous prime is 864642683. The next prime is 864642739. The reversal of 864642716 is 617246468.

864642716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

864642716 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15440021 + ... + 15440076.

It is an arithmetic number, because the mean of its divisors is an integer number (144107124).

Almost surely, 2^864642716 is an apocalyptic number.

It is an amenable number.

864642716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

864642716 is a wasteful number, since it uses less digits than its factorization.

864642716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30880108 (or 30880106 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 864642716 is about 29404.8077021429. The cubic root of 864642716 is about 952.6767411756.

The spelling of 864642716 in words is "eight hundred sixty-four million, six hundred forty-two thousand, seven hundred sixteen".