685080 has 96 divisors (see below), whose sum is σ = 2442960. Its totient is φ = 165120.

The previous prime is 685073. The next prime is 685081. The reversal of 685080 is 80586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3874 + ... + 4046.

2⁶⁸⁵⁰⁸⁰ is an apocalyptic number.

685080 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 685080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221480).

685080 is an abundant number, since it is smaller than the sum of its proper divisors (1757880).

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

685080 is a wasteful number, since it uses less digits than its factorization.

685080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 685080 is about 827.6955962188. The cubic root of 685080 is about 88.1550297537.

The spelling of 685080 in words is "six hundred eighty-five thousand, eighty".