68544585 has 24 divisors (see below), whose sum is σ = 119063880. Its totient is φ = 36479232.

The previous prime is 68544583. The next prime is 68544599. The reversal of 68544585 is 58544586.

68544585 is a `hidden beast` number, since 68 + 5 + 4 + 4 + 585 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2350089 + 66194496 = 1533^2 + 8136^2 .

It is not a de Polignac number, because 68544585 - 2¹ = 68544583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68544585.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68544583) 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 23 ways as a sum of consecutive naturals, for example, 24267 + ... + 26943.

It is an arithmetic number, because the mean of its divisors is an integer number (4960995).

Almost surely, 2^68544585 is an apocalyptic number.

It is an amenable number.

68544585 is a deficient number, since it is larger than the sum of its proper divisors (50519295).

68544585 is a wasteful number, since it uses less digits than its factorization.

68544585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257 (or 3254 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 68544585 is about 8279.1657188391. The cubic root of 68544585 is about 409.2522261437.

Subtracting from 68544585 its reverse (58544586), we obtain a palindrome (9999999).

The spelling of 68544585 in words is "sixty-eight million, five hundred forty-four thousand, five hundred eighty-five".