11085813 has 6 divisors (see below), whose sum is σ = 16012854. Its totient is φ = 7390536.

The previous prime is 11085803. The next prime is 11085847. The reversal of 11085813 is 31858011.

It can be written as a sum of positive squares in only one way, i.e., 9847044 + 1238769 = 3138^2 + 1113^2 .

It is not a de Polignac number, because 11085813 - 2¹⁰ = 11084789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11085803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615870 + ... + 615887.

It is an arithmetic number, because the mean of its divisors is an integer number (2668809).

Almost surely, 2^11085813 is an apocalyptic number.

It is an amenable number.

11085813 is a deficient number, since it is larger than the sum of its proper divisors (4927041).

11085813 is a wasteful number, since it uses less digits than its factorization.

11085813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231763 (or 1231760 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 11085813 is about 3329.5364542230. The cubic root of 11085813 is about 222.9748341097.

The spelling of 11085813 in words is "eleven million, eighty-five thousand, eight hundred thirteen".