864570832 has 40 divisors (see below), whose sum is σ = 1776225600. Its totient is φ = 406524672.

The previous prime is 864570829. The next prime is 864570841. The reversal of 864570832 is 238075468.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31269 + ... + 52027.

It is an arithmetic number, because the mean of its divisors is an integer number (44405640).

Almost surely, 2^864570832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864570832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888112800).

864570832 is an abundant number, since it is smaller than the sum of its proper divisors (911654768).

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

864570832 is a wasteful number, since it uses less digits than its factorization.

864570832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20923 (or 20917 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 864570832 is about 29403.5853596122. The cubic root of 864570832 is about 952.6503394756.

The spelling of 864570832 in words is "eight hundred sixty-four million, five hundred seventy thousand, eight hundred thirty-two".