11206661 has 4 divisors (see below), whose sum is σ = 11213952. Its totient is φ = 11199372.

The previous prime is 11206649. The next prime is 11206697. The reversal of 11206661 is 16660211.

11206661 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11206661 - 2¹⁰ = 11205637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11206061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 4746.

It is an arithmetic number, because the mean of its divisors is an integer number (2803488).

Almost surely, 2^11206661 is an apocalyptic number.

It is an amenable number.

11206661 is a deficient number, since it is larger than the sum of its proper divisors (7291).

11206661 is an equidigital number, since it uses as much as digits as its factorization.

11206661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 11206661 is about 3347.6351354352. The cubic root of 11206661 is about 223.7821343109.

Adding to 11206661 its reverse (16660211), we get a palindrome (27866872).

The spelling of 11206661 in words is "eleven million, two hundred six thousand, six hundred sixty-one".