105208865 has 8 divisors (see below), whose sum is σ = 128029248. Its totient is φ = 82981360.

The previous prime is 105208853. The next prime is 105208907. The reversal of 105208865 is 568802501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105208865 - 2⁴ = 105208849 is a prime.

It is a super-2 number, since 2×105208865² = 22137810549176450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147827 + ... + 148536.

It is an arithmetic number, because the mean of its divisors is an integer number (16003656).

Almost surely, 2^105208865 is an apocalyptic number.

It is an amenable number.

105208865 is a deficient number, since it is larger than the sum of its proper divisors (22820383).

105208865 is an equidigital number, since it uses as much as digits as its factorization.

105208865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296439.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 105208865 is about 10257.1372711883. The cubic root of 105208865 is about 472.0820039101.

The spelling of 105208865 in words is "one hundred five million, two hundred eight thousand, eight hundred sixty-five".