868664832 has 160 divisors (see below), whose sum is σ = 2665757952. Its totient is φ = 246226944.

The previous prime is 868664791. The next prime is 868664833. The reversal of 868664832 is 238466868.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868664833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1859863 + ... + 1860329.

Almost surely, 2^868664832 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 868664832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332878976).

868664832 is an abundant number, since it is smaller than the sum of its proper divisors (1797093120).

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

868664832 is a wasteful number, since it uses less digits than its factorization.

868664832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 652 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The square root of 868664832 is about 29473.1204998724. The cubic root of 868664832 is about 954.1516664406.

The spelling of 868664832 in words is "eight hundred sixty-eight million, six hundred sixty-four thousand, eight hundred thirty-two".