11047681 has 4 divisors (see below), whose sum is σ = 11093764. Its totient is φ = 11001600.

The previous prime is 11047669. The next prime is 11047693. The reversal of 11047681 is 18674011.

11047681 is digitally balanced in base 3, 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 is an interprime number because it is at equal distance from previous prime (11047669) and next prime (11047693).

It can be written as a sum of positive squares in 2 ways, for example, as 7840000 + 3207681 = 2800^2 + 1791^2 .

It is a cyclic number.

It is not a de Polignac number, because 11047681 - 2¹³ = 11039489 is a prime.

It is a super-2 number, since 2×11047681² = 244102510955522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11047781) 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, 22680 + ... + 23161.

It is an arithmetic number, because the mean of its divisors is an integer number (2773441).

Almost surely, 2^11047681 is an apocalyptic number.

It is an amenable number.

11047681 is a deficient number, since it is larger than the sum of its proper divisors (46083).

11047681 is an equidigital number, since it uses as much as digits as its factorization.

11047681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46082.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 11047681 is about 3323.8051988647. The cubic root of 11047681 is about 222.7188840428.

The spelling of 11047681 in words is "eleven million, forty-seven thousand, six hundred eighty-one".