216113717 has 4 divisors (see below), whose sum is σ = 216148320. Its totient is φ = 216079116.

The previous prime is 216113671. The next prime is 216113731. The reversal of 216113717 is 717311612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216113717 - 2²⁰ = 215065141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216113717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216113917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5033 + ... + 21390.

It is an arithmetic number, because the mean of its divisors is an integer number (54037080).

Almost surely, 2^216113717 is an apocalyptic number.

It is an amenable number.

216113717 is a deficient number, since it is larger than the sum of its proper divisors (34603).

216113717 is an equidigital number, since it uses as much as digits as its factorization.

216113717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34602.

The product of its digits is 1764, while the sum is 29.

The square root of 216113717 is about 14700.8066785466. The cubic root of 216113717 is about 600.1052750460.

The spelling of 216113717 in words is "two hundred sixteen million, one hundred thirteen thousand, seven hundred seventeen".