6560656 has 40 divisors (see below), whose sum is σ = 13296024. Its totient is φ = 3133440.

The previous prime is 6560651. The next prime is 6560663.

6560656 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 230400 + 6330256 = 480^2 + 2516^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6560651) 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, 47820 + ... + 47956.

Almost surely, 2^6560656 is an apocalyptic number.

It is an amenable number.

6560656 is an abundant number, since it is smaller than the sum of its proper divisors (6735368).

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

6560656 is a wasteful number, since it uses less digits than its factorization.

6560656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 6560656 is about 2561.3777542565. The cubic root of 6560656 is about 187.2042721893.

Subtracting from 6560656 its product of nonzero digits (32400), we obtain a palindrome (6528256).

The spelling of 6560656 in words is "six million, five hundred sixty thousand, six hundred fifty-six".