11189661 has 16 divisors (see below), whose sum is σ = 17793024. Its totient is φ = 6115824.

The previous prime is 11189653. The next prime is 11189669. The reversal of 11189661 is 16698111.

11189661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11189653) and next prime (11189669).

It is not a de Polignac number, because 11189661 - 2³ = 11189653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11189669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11101 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (1112064).

Almost surely, 2^11189661 is an apocalyptic number.

It is an amenable number.

11189661 is a deficient number, since it is larger than the sum of its proper divisors (6603363).

11189661 is a wasteful number, since it uses less digits than its factorization.

11189661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23200.

The product of its digits is 2592, while the sum is 33.

The square root of 11189661 is about 3345.0950659137. The cubic root of 11189661 is about 223.6689212389.

The spelling of 11189661 in words is "eleven million, one hundred eighty-nine thousand, six hundred sixty-one".