108206865 has 24 divisors (see below), whose sum is σ = 201987240. Its totient is φ = 53270784.

The previous prime is 108206837. The next prime is 108206893. The reversal of 108206865 is 568602801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (108206837) and next prime (108206893).

It can be written as a sum of positive squares in 4 ways, for example, as 5934096 + 102272769 = 2436^2 + 10113^2 .

It is not a de Polignac number, because 108206865 - 2¹² = 108202769 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 91900 + ... + 93069.

It is an arithmetic number, because the mean of its divisors is an integer number (8416135).

Almost surely, 2^108206865 is an apocalyptic number.

108206865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

108206865 is a deficient number, since it is larger than the sum of its proper divisors (93780375).

108206865 is a wasteful number, since it uses less digits than its factorization.

108206865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184993 (or 184990 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 108206865 is about 10402.2528809869. The cubic root of 108206865 is about 476.5241751103.

The spelling of 108206865 in words is "one hundred eight million, two hundred six thousand, eight hundred sixty-five".