11668538 has 8 divisors (see below), whose sum is σ = 20003232. Its totient is φ = 5000796.

The previous prime is 11668513. The next prime is 11668541. The reversal of 11668538 is 83586611.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416720 + ... + 416747.

It is an arithmetic number, because the mean of its divisors is an integer number (2500404).

Almost surely, 2^11668538 is an apocalyptic number.

11668538 is a deficient number, since it is larger than the sum of its proper divisors (8334694).

11668538 is an equidigital number, since it uses as much as digits as its factorization.

11668538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833476.

The product of its digits is 34560, while the sum is 38.

The square root of 11668538 is about 3415.9241794864. The cubic root of 11668538 is about 226.8151962876.

The spelling of 11668538 in words is "eleven million, six hundred sixty-eight thousand, five hundred thirty-eight".