664211163 has 16 divisors (see below), whose sum is σ = 1104143616. Its totient is φ = 345044640.

The previous prime is 664211137. The next prime is 664211173. The reversal of 664211163 is 361112466.

It is not a de Polignac number, because 664211163 - 2¹² = 664207067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664211163.

It is not an unprimeable number, because it can be changed into a prime (664211173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437456 + ... + 1437917.

It is an arithmetic number, because the mean of its divisors is an integer number (69008976).

Almost surely, 2^664211163 is an apocalyptic number.

664211163 is a deficient number, since it is larger than the sum of its proper divisors (439932453).

664211163 is a wasteful number, since it uses less digits than its factorization.

664211163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875394.

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

The square root of 664211163 is about 25772.2944845817. The cubic root of 664211163 is about 872.5066052050.

The spelling of 664211163 in words is "six hundred sixty-four million, two hundred eleven thousand, one hundred sixty-three".