66106171 has 2 divisors, whose sum is σ = 66106172. Its totient is φ = 66106170.

The previous prime is 66106169. The next prime is 66106181. The reversal of 66106171 is 17160166.

66106171 is nontrivially palindromic in base 8.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66106171 - 2¹ = 66106169 is a prime.

Together with 66106169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66106151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33053085 + 33053086.

It is an arithmetic number, because the mean of its divisors is an integer number (33053086).

Almost surely, 2^66106171 is an apocalyptic number.

66106171 is a deficient number, since it is larger than the sum of its proper divisors (1).

66106171 is an equidigital number, since it uses as much as digits as its factorization.

66106171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 66106171 is about 8130.5701522095. The cubic root of 66106171 is about 404.3405841980.

The spelling of 66106171 in words is "sixty-six million, one hundred six thousand, one hundred seventy-one".