163664211 has 4 divisors (see below), whose sum is σ = 218218952. Its totient is φ = 109109472.

The previous prime is 163664203. The next prime is 163664227. The reversal of 163664211 is 112466361.

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

It is not a de Polignac number, because 163664211 - 2³ = 163664203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163664231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27277366 + ... + 27277371.

It is an arithmetic number, because the mean of its divisors is an integer number (54554738).

Almost surely, 2^163664211 is an apocalyptic number.

163664211 is a deficient number, since it is larger than the sum of its proper divisors (54554741).

163664211 is an equidigital number, since it uses as much as digits as its factorization.

163664211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54554740.

The product of its digits is 5184, while the sum is 30.

The square root of 163664211 is about 12793.1313993096. The cubic root of 163664211 is about 546.9965330591.

The spelling of 163664211 in words is "one hundred sixty-three million, six hundred sixty-four thousand, two hundred eleven".