6505240 has 48 divisors (see below), whose sum is σ = 17031600. Its totient is φ = 2229696.

The previous prime is 6505211. The next prime is 6505243. The reversal of 6505240 is 425056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (354825).

Almost surely, 2^6505240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6505240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8515800).

6505240 is an abundant number, since it is smaller than the sum of its proper divisors (10526360).

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

6505240 is a wasteful number, since it uses less digits than its factorization.

6505240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344 (or 3333 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 6505240 is about 2550.5371983172. The cubic root of 6505240 is about 186.6756940079.

The spelling of 6505240 in words is "six million, five hundred five thousand, two hundred forty".