108686865 has 32 divisors (see below), whose sum is σ = 210435840. Its totient is φ = 46761984.

The previous prime is 108686863. The next prime is 108686869. The reversal of 108686865 is 568686801.

It is a happy number.

It is not a de Polignac number, because 108686865 - 2¹ = 108686863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108686863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28660 + ... + 32229.

It is an arithmetic number, because the mean of its divisors is an integer number (6576120).

Almost surely, 2^108686865 is an apocalyptic number.

108686865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108686865 is a deficient number, since it is larger than the sum of its proper divisors (101748975).

108686865 is a wasteful number, since it uses less digits than its factorization.

108686865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60921.

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 108686865 is about 10425.2992762798. The cubic root of 108686865 is about 477.2277479112.

The spelling of 108686865 in words is "one hundred eight million, six hundred eighty-six thousand, eight hundred sixty-five".