105605165 has 4 divisors (see below), whose sum is σ = 126726204. Its totient is φ = 84484128.

The previous prime is 105605147. The next prime is 105605191. The reversal of 105605165 is 561506501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79370281 + 26234884 = 8909^2 + 5122^2 .

It is a cyclic number.

It is not a de Polignac number, because 105605165 - 2¹⁰ = 105604141 is a prime.

It is a super-2 number, since 2×105605165² = 22304901749354450, which contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 10560512 + ... + 10560521.

It is an arithmetic number, because the mean of its divisors is an integer number (31681551).

Almost surely, 2^105605165 is an apocalyptic number.

It is an amenable number.

105605165 is a deficient number, since it is larger than the sum of its proper divisors (21121039).

105605165 is an equidigital number, since it uses as much as digits as its factorization.

105605165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21121038.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 105605165 is about 10276.4373690496. The cubic root of 105605165 is about 472.6740062528.

The spelling of 105605165 in words is "one hundred five million, six hundred five thousand, one hundred sixty-five".