685315 has 8 divisors (see below), whose sum is σ = 842688. Its totient is φ = 534720.

The previous prime is 685301. The next prime is 685319. The reversal of 685315 is 513586.

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

It is a de Polignac number, because none of the positive numbers 2^k-685315 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685319) 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, 1467 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2⁶⁸⁵³¹⁵ is an apocalyptic number.

685315 is a deficient number, since it is larger than the sum of its proper divisors (157373).

685315 is a wasteful number, since it uses less digits than its factorization.

685315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389.

The product of its digits is 3600, while the sum is 28.

The square root of 685315 is about 827.8375444494. The cubic root of 685315 is about 88.1651084130.

It can be divided in two parts, 685 and 315, that added together give a cube (1000 = 10³).

The spelling of 685315 in words is "six hundred eighty-five thousand, three hundred fifteen".