864870912 has 80 divisors (see below), whose sum is σ = 2560118880. Its totient is φ = 288285696.

The previous prime is 864870841. The next prime is 864870917. The reversal of 864870912 is 219078468.

864870912 is a `hidden beast` number, since 86 + 487 + 0 + 91 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (864870917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17458 + ... + 45105.

It is an arithmetic number, because the mean of its divisors is an integer number (32001486).

Almost surely, 2^864870912 is an apocalyptic number.

It is an amenable number.

864870912 is an abundant number, since it is smaller than the sum of its proper divisors (1695247968).

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

864870912 is an equidigital number, since it uses as much as digits as its factorization.

864870912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62590 (or 62568 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 864870912 is about 29408.6876959853. The cubic root of 864870912 is about 952.7605437664.

The spelling of 864870912 in words is "eight hundred sixty-four million, eight hundred seventy thousand, nine hundred twelve".