831693644 has 12 divisors (see below), whose sum is σ = 1458025800. Its totient is φ = 415114848.

The previous prime is 831693619. The next prime is 831693671. The reversal of 831693644 is 446396138.

It is a junction number, because it is equal to n+sod(n) for n = 831693595 and 831693604.

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 3 ways as a sum of consecutive naturals, for example, 180434 + ... + 184985.

It is an arithmetic number, because the mean of its divisors is an integer number (121502150).

Almost surely, 2^831693644 is an apocalyptic number.

It is an amenable number.

831693644 is a deficient number, since it is larger than the sum of its proper divisors (626332156).

831693644 is a wasteful number, since it uses less digits than its factorization.

831693644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365992 (or 365990 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 831693644 is about 28839.0992231033. The cubic root of 831693644 is about 940.4184209341.

The spelling of 831693644 in words is "eight hundred thirty-one million, six hundred ninety-three thousand, six hundred forty-four".