216488585 has 16 divisors (see below), whose sum is σ = 264695040. Its totient is φ = 169942080.

The previous prime is 216488579. The next prime is 216488599. The reversal of 216488585 is 585884612.

It is not a de Polignac number, because 216488585 - 2⁶ = 216488521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79964 + ... + 82626.

It is an arithmetic number, because the mean of its divisors is an integer number (16543440).

Almost surely, 2^216488585 is an apocalyptic number.

It is an amenable number.

216488585 is a deficient number, since it is larger than the sum of its proper divisors (48206455).

216488585 is a wasteful number, since it uses less digits than its factorization.

216488585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2968.

The product of its digits is 614400, while the sum is 47.

The square root of 216488585 is about 14713.5510669586. The cubic root of 216488585 is about 600.4520528467.

The spelling of 216488585 in words is "two hundred sixteen million, four hundred eighty-eight thousand, five hundred eighty-five".