11668889 has 8 divisors (see below), whose sum is σ = 12247872. Its totient is φ = 11095920.

The previous prime is 11668883. The next prime is 11668897. The reversal of 11668889 is 98886611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11668889 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11668883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762 + ... + 5564.

It is an arithmetic number, because the mean of its divisors is an integer number (1530984).

Almost surely, 2^11668889 is an apocalyptic number.

It is an amenable number.

11668889 is a deficient number, since it is larger than the sum of its proper divisors (578983).

11668889 is a wasteful number, since it uses less digits than its factorization.

11668889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007.

The product of its digits is 165888, while the sum is 47.

The square root of 11668889 is about 3415.9755561186. The cubic root of 11668889 is about 226.8174705325.

The spelling of 11668889 in words is "eleven million, six hundred sixty-eight thousand, eight hundred eighty-nine".