315685 has 8 divisors (see below), whose sum is σ = 398880. Its totient is φ = 239184.

The previous prime is 315677. The next prime is 315691. The reversal of 315685 is 586513.

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

It is a cyclic number.

It is not a de Polignac number, because 315685 - 2³ = 315677 is a prime.

It is a congruent number.

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, 1567 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (49860).

2³¹⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

315685 is a deficient number, since it is larger than the sum of its proper divisors (83195).

315685 is a wasteful number, since it uses less digits than its factorization.

315685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347.

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

The square root of 315685 is about 561.8585231177. The cubic root of 315685 is about 68.0902061194.

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

The spelling of 315685 in words is "three hundred fifteen thousand, six hundred eighty-five".