6568240 has 80 divisors (see below), whose sum is σ = 17980992. Its totient is φ = 2184192.

The previous prime is 6568229. The next prime is 6568259. The reversal of 6568240 is 428656.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20562 + ... + 20878.

Almost surely, 2^6568240 is an apocalyptic number.

6568240 is the 1480-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6568240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8990496).

6568240 is an abundant number, since it is smaller than the sum of its proper divisors (11412752).

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

6568240 is a wasteful number, since it uses less digits than its factorization.

6568240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6568240 is about 2562.8577799012. The cubic root of 6568240 is about 187.2763793322.

The spelling of 6568240 in words is "six million, five hundred sixty-eight thousand, two hundred forty".