10805945 has 4 divisors (see below), whose sum is σ = 12967140. Its totient is φ = 8644752.

The previous prime is 10805941. The next prime is 10805947. The reversal of 10805945 is 54950801.

10805945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8543929 + 2262016 = 2923^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 10805945 - 2² = 10805941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10805941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080590 + ... + 1080599.

It is an arithmetic number, because the mean of its divisors is an integer number (3241785).

Almost surely, 2^10805945 is an apocalyptic number.

It is an amenable number.

10805945 is a deficient number, since it is larger than the sum of its proper divisors (2161195).

10805945 is an equidigital number, since it uses as much as digits as its factorization.

10805945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161194.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 10805945 is about 3287.2397235371. The cubic root of 10805945 is about 221.0824409366.

The spelling of 10805945 in words is "ten million, eight hundred five thousand, nine hundred forty-five".