216704867 has 8 divisors (see below), whose sum is σ = 220231872. Its totient is φ = 213186600.

The previous prime is 216704857. The next prime is 216704881. The reversal of 216704867 is 768407612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216704867 - 2¹⁶ = 216639331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216704857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63392 + ... + 66722.

It is an arithmetic number, because the mean of its divisors is an integer number (27528984).

Almost surely, 2^216704867 is an apocalyptic number.

216704867 is a deficient number, since it is larger than the sum of its proper divisors (3527005).

216704867 is an equidigital number, since it uses as much as digits as its factorization.

216704867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 216704867 is about 14720.8989874939. The cubic root of 216704867 is about 600.6519459838.

The spelling of 216704867 in words is "two hundred sixteen million, seven hundred four thousand, eight hundred sixty-seven".