6544082240 has 56 divisors (see below), whose sum is σ = 15593705160. Its totient is φ = 2615851008.

The previous prime is 6544082227. The next prime is 6544082249. The reversal of 6544082240 is 422804456.

It can be written as a sum of positive squares in 4 ways, for example, as 696115456 + 5847966784 = 26384^2 + 76472^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6544082240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544082249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527954 + ... + 540206.

Almost surely, 2^6544082240 is an apocalyptic number.

It is an amenable number.

6544082240 is an abundant number, since it is smaller than the sum of its proper divisors (9049622920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6544082240 is a wasteful number, since it uses less digits than its factorization.

6544082240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13939 (or 13929 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 6544082240 is about 80895.5019763151. The cubic root of 6544082240 is about 1870.4649858399.

Adding to 6544082240 its reverse (422804456), we get a palindrome (6966886696).

The spelling of 6544082240 in words is "six billion, five hundred forty-four million, eighty-two thousand, two hundred forty".