11488661 has 4 divisors (see below), whose sum is σ = 11988192. Its totient is φ = 10989132.

The previous prime is 11488637. The next prime is 11488699. The reversal of 11488661 is 16688411.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 11488661 - 2¹⁸ = 11226517 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 (11488261) 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, 249731 + ... + 249776.

It is an arithmetic number, because the mean of its divisors is an integer number (2997048).

Almost surely, 2^11488661 is an apocalyptic number.

It is an amenable number.

11488661 is a deficient number, since it is larger than the sum of its proper divisors (499531).

11488661 is an equidigital number, since it uses as much as digits as its factorization.

11488661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499530.

The product of its digits is 9216, while the sum is 35.

The square root of 11488661 is about 3389.4927349089. The cubic root of 11488661 is about 225.6436614374.

The spelling of 11488661 in words is "eleven million, four hundred eighty-eight thousand, six hundred sixty-one".