66165059 has 2 divisors, whose sum is σ = 66165060. Its totient is φ = 66165058.

The previous prime is 66165031. The next prime is 66165079. The reversal of 66165059 is 95056166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66165059 - 2⁸ = 66164803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66165079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33082529 + 33082530.

It is an arithmetic number, because the mean of its divisors is an integer number (33082530).

Almost surely, 2^66165059 is an apocalyptic number.

66165059 is a deficient number, since it is larger than the sum of its proper divisors (1).

66165059 is an equidigital number, since it uses as much as digits as its factorization.

66165059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 66165059 is about 8134.1907403257. The cubic root of 66165059 is about 404.4606120319.

The spelling of 66165059 in words is "sixty-six million, one hundred sixty-five thousand, fifty-nine".