108685215 has 24 divisors (see below), whose sum is σ = 188929728. Its totient is φ = 57798720.

The previous prime is 108685211. The next prime is 108685223. The reversal of 108685215 is 512586801.

It is not a de Polignac number, because 108685215 - 2² = 108685211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108685215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108685211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13225 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (7872072).

Almost surely, 2^108685215 is an apocalyptic number.

108685215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

108685215 is a deficient number, since it is larger than the sum of its proper divisors (80244513).

108685215 is a wasteful number, since it uses less digits than its factorization.

108685215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 108685215 is about 10425.2201415606. The cubic root of 108685215 is about 477.2253329314.

It can be divided in two parts, 108685 and 215, that added together give a square (108900 = 330²).

The spelling of 108685215 in words is "one hundred eight million, six hundred eighty-five thousand, two hundred fifteen".