685197 has 12 divisors (see below), whose sum is σ = 1042080. Its totient is φ = 432648.

The previous prime is 685177. The next prime is 685199. The reversal of 685197 is 791586.

685197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 685197 - 2¹¹ = 683149 is a prime.

685197 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1833 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (86840).

2⁶⁸⁵¹⁹⁷ is an apocalyptic number.

It is an amenable number.

685197 is a deficient number, since it is larger than the sum of its proper divisors (356883).

685197 is a wasteful number, since it uses less digits than its factorization.

685197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032 (or 4029 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 685197 is about 827.7662713593. The cubic root of 685197 is about 88.1600479275.

The spelling of 685197 in words is "six hundred eighty-five thousand, one hundred ninety-seven".