6666189 has 8 divisors (see below), whose sum is σ = 8988480. Its totient is φ = 4394016.

The previous prime is 6666173. The next prime is 6666203. The reversal of 6666189 is 9816666.

6666189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6666189 - 2⁴ = 6666173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6666189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12217 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (1123560).

Almost surely, 2^6666189 is an apocalyptic number.

It is an amenable number.

6666189 is a deficient number, since it is larger than the sum of its proper divisors (2322291).

6666189 is a wasteful number, since it uses less digits than its factorization.

6666189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25059.

The product of its digits is 93312, while the sum is 42.

The square root of 6666189 is about 2581.8963960624. The cubic root of 6666189 is about 188.2027106534.

The spelling of 6666189 in words is "six million, six hundred sixty-six thousand, one hundred eighty-nine".