856663932 has 48 divisors (see below), whose sum is σ = 2119999392. Its totient is φ = 268308480.

The previous prime is 856663909. The next prime is 856663981. The reversal of 856663932 is 239366658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131668 + ... + 138020.

It is an arithmetic number, because the mean of its divisors is an integer number (44166654).

Almost surely, 2^856663932 is an apocalyptic number.

It is an amenable number.

856663932 is an abundant number, since it is smaller than the sum of its proper divisors (1263335460).

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

856663932 is a wasteful number, since it uses less digits than its factorization.

856663932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7038 (or 7036 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 856663932 is about 29268.8218416799. The cubic root of 856663932 is about 949.7372983688.

It can be divided in two parts, 85666 and 3932, that added together give a palindrome (89598).

The spelling of 856663932 in words is "eight hundred fifty-six million, six hundred sixty-three thousand, nine hundred thirty-two".