217316164 has 24 divisors (see below), whose sum is σ = 412086080. Its totient is φ = 99680544.

The previous prime is 217316147. The next prime is 217316179. The reversal of 217316164 is 461613712.

217316164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4344 + ... + 21295.

Almost surely, 2^217316164 is an apocalyptic number.

It is an amenable number.

217316164 is a deficient number, since it is larger than the sum of its proper divisors (194769916).

217316164 is a wasteful number, since it uses less digits than its factorization.

217316164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25819 (or 25817 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 217316164 is about 14741.6472620939. The cubic root of 217316164 is about 601.2162034533.

Adding to 217316164 its reverse (461613712), we get a palindrome (678929876).

The spelling of 217316164 in words is "two hundred seventeen million, three hundred sixteen thousand, one hundred sixty-four".