7216585 has 16 divisors (see below), whose sum is σ = 9331200. Its totient is φ = 5337856.

The previous prime is 7216577. The next prime is 7216589. The reversal of 7216585 is 5856127.

7216585 = 845² + 846² + ... + 854².

It is a cyclic number.

It is not a de Polignac number, because 7216585 - 2³ = 7216577 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 7216585.

It is not an unprimeable number, because it can be changed into a prime (7216589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4296 + ... + 5734.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^7216585 is an apocalyptic number.

It is an amenable number.

7216585 is a deficient number, since it is larger than the sum of its proper divisors (2114615).

7216585 is a wasteful number, since it uses less digits than its factorization.

7216585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its digits is 16800, while the sum is 34.

The square root of 7216585 is about 2686.3702276492. The cubic root of 7216585 is about 193.2460284236.

The spelling of 7216585 in words is "seven million, two hundred sixteen thousand, five hundred eighty-five".