216470711 has 4 divisors (see below), whose sum is σ = 216551712. Its totient is φ = 216389712.

The previous prime is 216470699. The next prime is 216470713. The reversal of 216470711 is 117074612.

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

It is a cyclic number.

It is not a de Polignac number, because 216470711 - 2⁶ = 216470647 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 (216470713) 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, 36350 + ... + 41883.

It is an arithmetic number, because the mean of its divisors is an integer number (54137928).

Almost surely, 2^216470711 is an apocalyptic number.

216470711 is a deficient number, since it is larger than the sum of its proper divisors (81001).

216470711 is an equidigital number, since it uses as much as digits as its factorization.

216470711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81000.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 216470711 is about 14712.9436551630. The cubic root of 216470711 is about 600.4355273020.

The spelling of 216470711 in words is "two hundred sixteen million, four hundred seventy thousand, seven hundred eleven".