66334271 has 2 divisors, whose sum is σ = 66334272. Its totient is φ = 66334270.

The previous prime is 66334207. The next prime is 66334273. The reversal of 66334271 is 17243366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66334271 - 2⁶ = 66334207 is a prime.

Together with 66334273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66334273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33167135 + 33167136.

It is an arithmetic number, because the mean of its divisors is an integer number (33167136).

Almost surely, 2^66334271 is an apocalyptic number.

66334271 is a deficient number, since it is larger than the sum of its proper divisors (1).

66334271 is an equidigital number, since it uses as much as digits as its factorization.

66334271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 66334271 is about 8144.5853792566. The cubic root of 66334271 is about 404.8051107239.

The spelling of 66334271 in words is "sixty-six million, three hundred thirty-four thousand, two hundred seventy-one".