108865855 has 32 divisors (see below), whose sum is σ = 155404800. Its totient is φ = 71632512.

The previous prime is 108865843. The next prime is 108865879. The reversal of 108865855 is 558568801.

It is not a de Polignac number, because 108865855 - 2⁷ = 108865727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287056 + ... + 287434.

It is an arithmetic number, because the mean of its divisors is an integer number (4856400).

Almost surely, 2^108865855 is an apocalyptic number.

108865855 is a deficient number, since it is larger than the sum of its proper divisors (46538945).

108865855 is a wasteful number, since it uses less digits than its factorization.

108865855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 384000, while the sum is 46.

The square root of 108865855 is about 10433.8801507397. The cubic root of 108865855 is about 477.4895769953.

The spelling of 108865855 in words is "one hundred eight million, eight hundred sixty-five thousand, eight hundred fifty-five".