685874 has 8 divisors (see below), whose sum is σ = 1175808. Its totient is φ = 293940.

The previous prime is 685859. The next prime is 685907. The reversal of 685874 is 478586.

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

It is a Curzon number.

It is a nialpdrome in base 7 and base 16.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24482 + ... + 24509.

It is an arithmetic number, because the mean of its divisors is an integer number (146976).

2⁶⁸⁵⁸⁷⁴ is an apocalyptic number.

685874 is a deficient number, since it is larger than the sum of its proper divisors (489934).

685874 is a wasteful number, since it uses less digits than its factorization.

685874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49000.

The product of its digits is 53760, while the sum is 38.

The square root of 685874 is about 828.1751022580. The cubic root of 685874 is about 88.1890735004.

The spelling of 685874 in words is "six hundred eighty-five thousand, eight hundred seventy-four".