216804711 has 8 divisors (see below), whose sum is σ = 289144960. Its totient is φ = 144500472.

The previous prime is 216804701. The next prime is 216804713. The reversal of 216804711 is 117408612.

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

It is not a de Polignac number, because 216804711 - 2⁹ = 216804199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216804713) 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, 12150 + ... + 24108.

It is an arithmetic number, because the mean of its divisors is an integer number (36143120).

Almost surely, 2^216804711 is an apocalyptic number.

216804711 is a deficient number, since it is larger than the sum of its proper divisors (72340249).

216804711 is a wasteful number, since it uses less digits than its factorization.

216804711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18005.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 216804711 is about 14724.2898300733. The cubic root of 216804711 is about 600.7441793912.

The spelling of 216804711 in words is "two hundred sixteen million, eight hundred four thousand, seven hundred eleven".