856975632 has 40 divisors (see below), whose sum is σ = 2226107520. Its totient is φ = 284077440.

The previous prime is 856975619. The next prime is 856975633. The reversal of 856975632 is 236579658.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (856975633) 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, 40632 + ... + 58007.

It is an arithmetic number, because the mean of its divisors is an integer number (55652688).

Almost surely, 2^856975632 is an apocalyptic number.

It is an amenable number.

856975632 is an abundant number, since it is smaller than the sum of its proper divisors (1369131888).

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

856975632 is a wasteful number, since it uses less digits than its factorization.

856975632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98831 (or 98825 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The square root of 856975632 is about 29274.1461361386. The cubic root of 856975632 is about 949.8524727516.

The spelling of 856975632 in words is "eight hundred fifty-six million, nine hundred seventy-five thousand, six hundred thirty-two".