685260 has 84 divisors (see below), whose sum is σ = 2203488. Its totient is φ = 178848.

The previous prime is 685249. The next prime is 685271. The reversal of 685260 is 62586.

685260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685249) and next prime (685271).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 14557 + ... + 14603.

It is an arithmetic number, because the mean of its divisors is an integer number (26232).

2⁶⁸⁵²⁶⁰ is an apocalyptic number.

685260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101744).

685260 is an abundant number, since it is smaller than the sum of its proper divisors (1518228).

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

685260 is a wasteful number, since it uses less digits than its factorization.

685260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 685260 is about 827.8043247048. The cubic root of 685260 is about 88.1627497844.

The spelling of 685260 in words is "six hundred eighty-five thousand, two hundred sixty".