685347 has 8 divisors (see below), whose sum is σ = 984144. Its totient is φ = 421728.

The previous prime is 685339. The next prime is 685361. The reversal of 685347 is 743586.

685347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 685347 - 2³ = 685339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685337) 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, 8748 + ... + 8825.

It is an arithmetic number, because the mean of its divisors is an integer number (123018).

2⁶⁸⁵³⁴⁷ is an apocalyptic number.

685347 is a deficient number, since it is larger than the sum of its proper divisors (298797).

685347 is a wasteful number, since it uses less digits than its factorization.

685347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17589.

The product of its digits is 20160, while the sum is 33.

The square root of 685347 is about 827.8568716874. The cubic root of 685347 is about 88.1664806479.

Adding to 685347 its product of digits (20160), we get a palindrome (705507).

The spelling of 685347 in words is "six hundred eighty-five thousand, three hundred forty-seven".