685960 has 32 divisors (see below), whose sum is σ = 1684800. Its totient is φ = 249280.

The previous prime is 685939. The next prime is 685963. The reversal of 685960 is 69586.

685960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×685960² = 941082243200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685963) by changing a digit.

685960 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2⁶⁸⁵⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

685960 is an abundant number, since it is smaller than the sum of its proper divisors (998840).

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

685960 is a wasteful number, since it uses less digits than its factorization.

685960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 685960 is about 828.2270220175. The cubic root of 685960 is about 88.1927592810.

The spelling of 685960 in words is "six hundred eighty-five thousand, nine hundred sixty".