11488681 has 4 divisors (see below), whose sum is σ = 11499664. Its totient is φ = 11477700.

The previous prime is 11488637. The next prime is 11488699. The reversal of 11488681 is 18688411.

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 11488681 - 2¹⁷ = 11357609 is a prime.

It is a super-2 number, since 2×11488681² = 263979582239522, which contains 22 as substring.

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 11488681.

It is not an unprimeable number, because it can be changed into a prime (11485681) 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, 3735 + ... + 6076.

It is an arithmetic number, because the mean of its divisors is an integer number (2874916).

Almost surely, 2^11488681 is an apocalyptic number.

It is an amenable number.

11488681 is a deficient number, since it is larger than the sum of its proper divisors (10983).

11488681 is an equidigital number, since it uses as much as digits as its factorization.

11488681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10982.

The product of its digits is 12288, while the sum is 37.

The square root of 11488681 is about 3389.4956852016. The cubic root of 11488681 is about 225.6437923743.

The spelling of 11488681 in words is "eleven million, four hundred eighty-eight thousand, six hundred eighty-one".