66131166 has 8 divisors (see below), whose sum is σ = 132262344. Its totient is φ = 22043720.

The previous prime is 66131161. The next prime is 66131171. The reversal of 66131166 is 66113166.

It is an interprime number because it is at equal distance from previous prime (66131161) and next prime (66131171).

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

66131166 is an admirable number.

It is a super-2 number, since 2×66131166² = 8746662233039112, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66131161) 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, 5510925 + ... + 5510936.

It is an arithmetic number, because the mean of its divisors is an integer number (16532793).

Almost surely, 2^66131166 is an apocalyptic number.

66131166 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.

66131166 is a wasteful number, since it uses less digits than its factorization.

66131166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021866.

The product of its digits is 3888, while the sum is 30.

The square root of 66131166 is about 8132.1071070172. The cubic root of 66131166 is about 404.3915386917.

The spelling of 66131166 in words is "sixty-six million, one hundred thirty-one thousand, one hundred sixty-six".