166605059 has 2 divisors, whose sum is σ = 166605060. Its totient is φ = 166605058.

The previous prime is 166605037. The next prime is 166605097. The reversal of 166605059 is 950506661.

It is an a-pointer prime, because the next prime (166605097) can be obtained adding 166605059 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166605059 - 2⁸ = 166604803 is a prime.

It is not a weakly prime, because it can be changed into another prime (166605259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83302529 + 83302530.

It is an arithmetic number, because the mean of its divisors is an integer number (83302530).

Almost surely, 2^166605059 is an apocalyptic number.

166605059 is a deficient number, since it is larger than the sum of its proper divisors (1).

166605059 is an equidigital number, since it uses as much as digits as its factorization.

166605059 is an odious number, because the sum of its binary digits is odd.

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

The square root of 166605059 is about 12907.5582121484. The cubic root of 166605059 is about 550.2533917813.

The spelling of 166605059 in words is "one hundred sixty-six million, six hundred five thousand, fifty-nine".