10105805 has 8 divisors (see below), whose sum is σ = 12216312. Its totient is φ = 8025088.

The previous prime is 10105801. The next prime is 10105819. The reversal of 10105805 is 50850101.

It can be written as a sum of positive squares in 4 ways, for example, as 1261129 + 8844676 = 1123^2 + 2974^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 10105805 - 2² = 10105801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10105801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6692 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (1527039).

Almost surely, 2^10105805 is an apocalyptic number.

It is an amenable number.

10105805 is a deficient number, since it is larger than the sum of its proper divisors (2110507).

10105805 is a wasteful number, since it uses less digits than its factorization.

10105805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14895.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 10105805 is about 3178.9628811925. The cubic root of 10105805 is about 216.2006380478.

Adding to 10105805 its reverse (50850101), we get a palindrome (60955906).

The spelling of 10105805 in words is "ten million, one hundred five thousand, eight hundred five".