108805185 has 48 divisors (see below), whose sum is σ = 204618960. Its totient is φ = 53268480.

The previous prime is 108805171. The next prime is 108805189. The reversal of 108805185 is 581508801.

It can be written as a sum of positive squares in 8 ways, for example, as 26286129 + 82519056 = 5127^2 + 9084^2 .

It is not a de Polignac number, because 108805185 - 2⁶ = 108805121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108805189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29631 + ... + 33099.

It is an arithmetic number, because the mean of its divisors is an integer number (4262895).

Almost surely, 2^108805185 is an apocalyptic number.

108805185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108805185 is a deficient number, since it is larger than the sum of its proper divisors (95813775).

108805185 is a wasteful number, since it uses less digits than its factorization.

108805185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538 (or 3535 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 108805185 is about 10430.9723899548. The cubic root of 108805185 is about 477.4008602416.

The spelling of 108805185 in words is "one hundred eight million, eight hundred five thousand, one hundred eighty-five".