105807085 has 4 divisors (see below), whose sum is σ = 126968508. Its totient is φ = 84645664.

The previous prime is 105807077. The next prime is 105807089. The reversal of 105807085 is 580708501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580708501 = 139 ⋅4177759.

It can be written as a sum of positive squares in 2 ways, for example, as 26347689 + 79459396 = 5133^2 + 8914^2 .

It is a cyclic number.

It is not a de Polignac number, because 105807085 - 2³ = 105807077 is a prime.

It is a super-2 number, since 2×105807085² = 22390278472394450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105807085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105807089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10580704 + ... + 10580713.

It is an arithmetic number, because the mean of its divisors is an integer number (31742127).

Almost surely, 2^105807085 is an apocalyptic number.

It is an amenable number.

105807085 is a deficient number, since it is larger than the sum of its proper divisors (21161423).

105807085 is an equidigital number, since it uses as much as digits as its factorization.

105807085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21161422.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 105807085 is about 10286.2570938121. The cubic root of 105807085 is about 472.9750697169.

The spelling of 105807085 in words is "one hundred five million, eight hundred seven thousand, eighty-five".