685931233 has 8 divisors (see below), whose sum is σ = 742565376. Its totient is φ = 629850000.

The previous prime is 685931161. The next prime is 685931243. The reversal of 685931233 is 332139586.

685931233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 685931233 - 2¹⁷ = 685800161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685931243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135643 + ... + 140608.

It is an arithmetic number, because the mean of its divisors is an integer number (92820672).

Almost surely, 2^685931233 is an apocalyptic number.

It is an amenable number.

685931233 is a deficient number, since it is larger than the sum of its proper divisors (56634143).

685931233 is a wasteful number, since it uses less digits than its factorization.

685931233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276455.

The product of its digits is 116640, while the sum is 40.

The square root of 685931233 is about 26190.2889063867. The cubic root of 685931233 is about 881.9152642169.

The spelling of 685931233 in words is "six hundred eighty-five million, nine hundred thirty-one thousand, two hundred thirty-three".