11668947 has 4 divisors (see below), whose sum is σ = 15558600. Its totient is φ = 7779296.

The previous prime is 11668903. The next prime is 11668967. The reversal of 11668947 is 74986611.

11668947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11668947 - 2⁶ = 11668883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11668899 and 11668908.

It is not an unprimeable number, because it can be changed into a prime (11668967) 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, 1944822 + ... + 1944827.

It is an arithmetic number, because the mean of its divisors is an integer number (3889650).

Almost surely, 2^11668947 is an apocalyptic number.

11668947 is a deficient number, since it is larger than the sum of its proper divisors (3889653).

11668947 is an equidigital number, since it uses as much as digits as its factorization.

11668947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889652.

The product of its digits is 72576, while the sum is 42.

The square root of 11668947 is about 3415.9840456302. The cubic root of 11668947 is about 226.8178463292.

The spelling of 11668947 in words is "eleven million, six hundred sixty-eight thousand, nine hundred forty-seven".