66271 has 2 divisors, whose sum is σ = 66272. Its totient is φ = 66270.

The previous prime is 66239. The next prime is 66293. The reversal of 66271 is 17266.

It is an a-pointer prime, because the next prime (66293) can be obtained adding 66271 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66271 - 2⁵ = 66239 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 (66221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33135 + 33136.

It is an arithmetic number, because the mean of its divisors is an integer number (33136).

2⁶⁶²⁷¹ is an apocalyptic number.

66271 is a deficient number, since it is larger than the sum of its proper divisors (1).

66271 is an equidigital number, since it uses as much as digits as its factorization.

66271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 66271 is about 257.4315442987. The cubic root of 66271 is about 40.4676365952.

The spelling of 66271 in words is "sixty-six thousand, two hundred seventy-one".