685060 has 12 divisors (see below), whose sum is σ = 1438668. Its totient is φ = 274016.

The previous prime is 685057. The next prime is 685063. The reversal of 685060 is 60586.

It is an interprime number because it is at equal distance from previous prime (685057) and next prime (685063).

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 498436 = 432^2 + 706^2 .

It is not an unprimeable number, because it can be changed into a prime (685063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17107 + ... + 17146.

It is an arithmetic number, because the mean of its divisors is an integer number (119889).

2⁶⁸⁵⁰⁶⁰ is an apocalyptic number.

It is an amenable number.

685060 is an abundant number, since it is smaller than the sum of its proper divisors (753608).

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

685060 is a wasteful number, since it uses less digits than its factorization.

685060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34262 (or 34260 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 685060 is about 827.6835143942. The cubic root of 685060 is about 88.1541718891.

Subtracting from 685060 its sum of digits (25), we obtain a triangular number (685035 = T₁₁₇₀).

The spelling of 685060 in words is "six hundred eighty-five thousand, sixty".