11190661 has 2 divisors, whose sum is σ = 11190662. Its totient is φ = 11190660.

The previous prime is 11190643. The next prime is 11190667. The reversal of 11190661 is 16609111.

11190661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11088900 + 101761 = 3330^2 + 319^2 .

It is an emirp because it is prime and its reverse (16609111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11190661 - 2⁵ = 11190629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11190667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595330 + 5595331.

It is an arithmetic number, because the mean of its divisors is an integer number (5595331).

Almost surely, 2^11190661 is an apocalyptic number.

It is an amenable number.

11190661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11190661 is an equidigital number, since it uses as much as digits as its factorization.

11190661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 11190661 is about 3345.2445351573. The cubic root of 11190661 is about 223.6755840044.

Adding to 11190661 its reverse (16609111), we get a palindrome (27799772).

The spelling of 11190661 in words is "eleven million, one hundred ninety thousand, six hundred sixty-one".