108185705 has 12 divisors (see below), whose sum is σ = 137910540. Its totient is φ = 81456384.

The previous prime is 108185683. The next prime is 108185711. The reversal of 108185705 is 507581801.

It can be written as a sum of positive squares in 6 ways, for example, as 1104601 + 107081104 = 1051^2 + 10348^2 .

It is not a de Polignac number, because 108185705 - 2²⁴ = 91408489 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35990 + ... + 38879.

It is an arithmetic number, because the mean of its divisors is an integer number (11492545).

Almost surely, 2^108185705 is an apocalyptic number.

It is an amenable number.

108185705 is a deficient number, since it is larger than the sum of its proper divisors (29724835).

108185705 is an equidigital number, since it uses as much as digits as its factorization.

108185705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74908 (or 74891 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 35.

The square root of 108185705 is about 10401.2357438912. The cubic root of 108185705 is about 476.4931114346.

The spelling of 108185705 in words is "one hundred eight million, one hundred eighty-five thousand, seven hundred five".