6564648 has 16 divisors (see below), whose sum is σ = 16411680. Its totient is φ = 2188208.

The previous prime is 6564647. The next prime is 6564661. The reversal of 6564648 is 8464656.

It is not an unprimeable number, because it can be changed into a prime (6564647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136740 + ... + 136787.

It is an arithmetic number, because the mean of its divisors is an integer number (1025730).

Almost surely, 2^6564648 is an apocalyptic number.

It is an amenable number.

6564648 is an abundant number, since it is smaller than the sum of its proper divisors (9847032).

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

6564648 is a wasteful number, since it uses less digits than its factorization.

6564648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273536 (or 273532 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 6564648 is about 2562.1569038605. The cubic root of 6564648 is about 187.2422342432.

The spelling of 6564648 in words is "six million, five hundred sixty-four thousand, six hundred forty-eight".