685022 has 8 divisors (see below), whose sum is σ = 1106616. Its totient is φ = 316152.

The previous prime is 685019. The next prime is 685031. The reversal of 685022 is 220586.

It is a happy number.

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

It is a congruent number.

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, 13148 + ... + 13199.

It is an arithmetic number, because the mean of its divisors is an integer number (138327).

2⁶⁸⁵⁰²² is an apocalyptic number.

685022 is a deficient number, since it is larger than the sum of its proper divisors (421594).

685022 is a wasteful number, since it uses less digits than its factorization.

685022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26362.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 685022 is about 827.6605584417. The cubic root of 685022 is about 88.1525419002.

The spelling of 685022 in words is "six hundred eighty-five thousand, twenty-two".