6661006166 has 8 divisors (see below), whose sum is σ = 10006812144. Its totient is φ = 3325402120.

The previous prime is 6661006153. The next prime is 6661006169. The reversal of 6661006166 is 6616001666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661006169) 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, 2548850 + ... + 2551461.

It is an arithmetic number, because the mean of its divisors is an integer number (1250851518).

Almost surely, 2^6661006166 is an apocalyptic number.

6661006166 is a deficient number, since it is larger than the sum of its proper divisors (3345805978).

6661006166 is a wasteful number, since it uses less digits than its factorization.

6661006166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100966.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6661006166 is about 81614.9873858962. The cubic root of 6661006166 is about 1881.5392334241.

The spelling of 6661006166 in words is "six billion, six hundred sixty-one million, six thousand, one hundred sixty-six".