685272 has 32 divisors (see below), whose sum is σ = 1958400. Its totient is φ = 195744.

The previous prime is 685271. The next prime is 685297. The reversal of 685272 is 272586.

685272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872 + ... + 2207.

It is an arithmetic number, because the mean of its divisors is an integer number (61200).

2⁶⁸⁵²⁷² is an apocalyptic number.

It is an amenable number.

685272 is an abundant number, since it is smaller than the sum of its proper divisors (1273128).

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

685272 is a wasteful number, since it uses less digits than its factorization.

685272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4091 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 685272 is about 827.8115727628. The cubic root of 685272 is about 88.1632644050.

Subtracting from 685272 its reverse (272586), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 685272 in words is "six hundred eighty-five thousand, two hundred seventy-two".