66005166 has 8 divisors (see below), whose sum is σ = 132010344. Its totient is φ = 22001720.

The previous prime is 66005153. The next prime is 66005167. The reversal of 66005166 is 66150066.

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

66005166 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66005167) 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, 5500425 + ... + 5500436.

It is an arithmetic number, because the mean of its divisors is an integer number (16501293).

Almost surely, 2^66005166 is an apocalyptic number.

66005166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66005166 is a wasteful number, since it uses less digits than its factorization.

66005166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000866.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 66005166 is about 8124.3563437358. The cubic root of 66005166 is about 404.1345457497.

The spelling of 66005166 in words is "sixty-six million, five thousand, one hundred sixty-six".