685104 has 40 divisors (see below), whose sum is σ = 2023680. Its totient is φ = 195648.

The previous prime is 685103. The next prime is 685109. The reversal of 685104 is 401586.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (685103) 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, 684 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (50592).

2⁶⁸⁵¹⁰⁴ is an apocalyptic number.

It is an amenable number.

685104 is an abundant number, since it is smaller than the sum of its proper divisors (1338576).

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

685104 is a wasteful number, since it uses less digits than its factorization.

685104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 685104 is about 827.7100941755. The cubic root of 685104 is about 88.1560591693.

The spelling of 685104 in words is "six hundred eighty-five thousand, one hundred four".