6508240 has 20 divisors (see below), whose sum is σ = 15131844. Its totient is φ = 2603264.

The previous prime is 6508237. The next prime is 6508247. The reversal of 6508240 is 428056.

It can be written as a sum of positive squares in 2 ways, for example, as 3779136 + 2729104 = 1944^2 + 1652^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6508247) 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 3 ways as a sum of consecutive naturals, for example, 40597 + ... + 40756.

Almost surely, 2^6508240 is an apocalyptic number.

It is an amenable number.

6508240 is an abundant number, since it is smaller than the sum of its proper divisors (8623604).

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

6508240 is a wasteful number, since it uses less digits than its factorization.

6508240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81366 (or 81360 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 6508240 is about 2551.1252419276. The cubic root of 6508240 is about 186.7043858017.

The spelling of 6508240 in words is "six million, five hundred eight thousand, two hundred forty".