105161665 has 16 divisors (see below), whose sum is σ = 144755712. Its totient is φ = 71843904.

The previous prime is 105161657. The next prime is 105161687. The reversal of 105161665 is 566161501.

It is a cyclic number.

It is not a de Polignac number, because 105161665 - 2³ = 105161657 is a prime.

It is a super-2 number, since 2×105161665² = 22117951571144450, 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 15 ways as a sum of consecutive naturals, for example, 4272 + ... + 15118.

It is an arithmetic number, because the mean of its divisors is an integer number (9047232).

Almost surely, 2^105161665 is an apocalyptic number.

It is an amenable number.

105161665 is a deficient number, since it is larger than the sum of its proper divisors (39594047).

105161665 is a wasteful number, since it uses less digits than its factorization.

105161665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11136.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 105161665 is about 10254.8361761659. The cubic root of 105161665 is about 472.0113964140.

The spelling of 105161665 in words is "one hundred five million, one hundred sixty-one thousand, six hundred sixty-five".