66132271 has 2 divisors, whose sum is σ = 66132272. Its totient is φ = 66132270.

The previous prime is 66132263. The next prime is 66132281. The reversal of 66132271 is 17223166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66132271 - 2³ = 66132263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66132281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33066135 + 33066136.

It is an arithmetic number, because the mean of its divisors is an integer number (33066136).

Almost surely, 2^66132271 is an apocalyptic number.

66132271 is a deficient number, since it is larger than the sum of its proper divisors (1).

66132271 is an equidigital number, since it uses as much as digits as its factorization.

66132271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 66132271 is about 8132.1750473044. The cubic root of 66132271 is about 404.3937910344.

The spelling of 66132271 in words is "sixty-six million, one hundred thirty-two thousand, two hundred seventy-one".