685130 has 16 divisors (see below), whose sum is σ = 1245024. Its totient is φ = 271440.

The previous prime is 685123. The next prime is 685141. The reversal of 685130 is 31586.

It is a junction number, because it is equal to n+sod(n) for n = 685096 and 685105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (77814).

2⁶⁸⁵¹³⁰ is an apocalyptic number.

685130 is a deficient number, since it is larger than the sum of its proper divisors (559894).

685130 is a wasteful number, since it uses less digits than its factorization.

685130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 685130 is about 827.7258000087. The cubic root of 685130 is about 88.1571743423.

The spelling of 685130 in words is "six hundred eighty-five thousand, one hundred thirty".