66146159 has 2 divisors, whose sum is σ = 66146160. Its totient is φ = 66146158.

The previous prime is 66146131. The next prime is 66146189. The reversal of 66146159 is 95164166.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66146159 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 (66146189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33073079 + 33073080.

It is an arithmetic number, because the mean of its divisors is an integer number (33073080).

Almost surely, 2^66146159 is an apocalyptic number.

66146159 is a deficient number, since it is larger than the sum of its proper divisors (1).

66146159 is an equidigital number, since it uses as much as digits as its factorization.

66146159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 66146159 is about 8133.0288945755. The cubic root of 66146159 is about 404.4220970732.

The spelling of 66146159 in words is "sixty-six million, one hundred forty-six thousand, one hundred fifty-nine".