11236661 has 4 divisors (see below), whose sum is σ = 11298924. Its totient is φ = 11174400.

The previous prime is 11236651. The next prime is 11236669. The reversal of 11236661 is 16663211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16663211 = 419 ⋅39769.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 11015761 = 470^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 11236661 - 2⁶ = 11236597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11236661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11236669) 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, 30860 + ... + 31221.

It is an arithmetic number, because the mean of its divisors is an integer number (2824731).

Almost surely, 2^11236661 is an apocalyptic number.

It is an amenable number.

11236661 is a deficient number, since it is larger than the sum of its proper divisors (62263).

11236661 is an equidigital number, since it uses as much as digits as its factorization.

11236661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62262.

The product of its digits is 1296, while the sum is 26.

The square root of 11236661 is about 3352.1129157593. The cubic root of 11236661 is about 223.9816431067.

Adding to 11236661 its reverse (16663211), we get a palindrome (27899872).

The spelling of 11236661 in words is "eleven million, two hundred thirty-six thousand, six hundred sixty-one".