216075585 has 16 divisors (see below), whose sum is σ = 377150400. Its totient is φ = 104763840.

The previous prime is 216075583. The next prime is 216075589. The reversal of 216075585 is 585570612.

It is not a de Polignac number, because 216075585 - 2¹ = 216075583 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216075583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654610 + ... + 654939.

It is an arithmetic number, because the mean of its divisors is an integer number (23571900).

Almost surely, 2^216075585 is an apocalyptic number.

It is an amenable number.

216075585 is a deficient number, since it is larger than the sum of its proper divisors (161074815).

216075585 is a wasteful number, since it uses less digits than its factorization.

216075585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309568.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 216075585 is about 14699.5096857004. The cubic root of 216075585 is about 600.0699779493.

The spelling of 216075585 in words is "two hundred sixteen million, seventy-five thousand, five hundred eighty-five".