166636063 has 4 divisors (see below), whose sum is σ = 181784808. Its totient is φ = 151487320.

The previous prime is 166636037. The next prime is 166636069. The reversal of 166636063 is 360636661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166636063 - 2⁵ = 166636031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166636069) 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 in 3 ways as a sum of consecutive naturals, for example, 7574356 + ... + 7574377.

It is an arithmetic number, because the mean of its divisors is an integer number (45446202).

Almost surely, 2^166636063 is an apocalyptic number.

166636063 is a deficient number, since it is larger than the sum of its proper divisors (15148745).

166636063 is a wasteful number, since it uses less digits than its factorization.

166636063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15148744.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 166636063 is about 12908.7591580291. The cubic root of 166636063 is about 550.2875223936.

The spelling of 166636063 in words is "one hundred sixty-six million, six hundred thirty-six thousand, sixty-three".