66042167 has 2 divisors, whose sum is σ = 66042168. Its totient is φ = 66042166.

The previous prime is 66042139. The next prime is 66042169. The reversal of 66042167 is 76124066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66042167 - 2¹⁴ = 66025783 is a prime.

Together with 66042169, 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 (66042169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021083 + 33021084.

It is an arithmetic number, because the mean of its divisors is an integer number (33021084).

Almost surely, 2^66042167 is an apocalyptic number.

66042167 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042167 is an equidigital number, since it uses as much as digits as its factorization.

66042167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66042167 is about 8126.6331897041. The cubic root of 66042167 is about 404.2100478653.

The spelling of 66042167 in words is "sixty-six million, forty-two thousand, one hundred sixty-seven".