6560664 has 32 divisors (see below), whose sum is σ = 17893440. Its totient is φ = 1988000.

The previous prime is 6560663. The next prime is 6560669. The reversal of 6560664 is 4660656.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6560663) 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, 12162 + ... + 12689.

It is an arithmetic number, because the mean of its divisors is an integer number (559170).

Almost surely, 2^6560664 is an apocalyptic number.

It is an amenable number.

6560664 is an abundant number, since it is smaller than the sum of its proper divisors (11332776).

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

6560664 is a wasteful number, since it uses less digits than its factorization.

6560664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24871 (or 24867 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 6560664 is about 2561.3793159155. The cubic root of 6560664 is about 187.2043482809.

The spelling of 6560664 in words is "six million, five hundred sixty thousand, six hundred sixty-four".