216364117 has 4 divisors (see below), whose sum is σ = 229091436. Its totient is φ = 203636800.

The previous prime is 216364111. The next prime is 216364163. The reversal of 216364117 is 711463612.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72148036 + 144216081 = 8494^2 + 12009^2 .

It is a cyclic number.

It is not a de Polignac number, because 216364117 - 2⁷ = 216363989 is a prime.

It is a super-2 number, since 2×216364117² = 93626862250379378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216364111) 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, 6363634 + ... + 6363667.

It is an arithmetic number, because the mean of its divisors is an integer number (57272859).

Almost surely, 2^216364117 is an apocalyptic number.

It is an amenable number.

216364117 is a deficient number, since it is larger than the sum of its proper divisors (12727319).

216364117 is a wasteful number, since it uses less digits than its factorization.

216364117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12727318.

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

The square root of 216364117 is about 14709.3207525025. The cubic root of 216364117 is about 600.3369561026.

The spelling of 216364117 in words is "two hundred sixteen million, three hundred sixty-four thousand, one hundred seventeen".