6560641 has 8 divisors (see below), whose sum is σ = 6820200. Its totient is φ = 6310864.

The previous prime is 6560633. The next prime is 6560647. The reversal of 6560641 is 1460656.

It can be written as a sum of positive squares in 4 ways, for example, as 330625 + 6230016 = 575^2 + 2496^2 .

It is not a de Polignac number, because 6560641 - 2³ = 6560633 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6560647) 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, 24255 + ... + 24523.

It is an arithmetic number, because the mean of its divisors is an integer number (852525).

Almost surely, 2^6560641 is an apocalyptic number.

It is an amenable number.

6560641 is a deficient number, since it is larger than the sum of its proper divisors (259559).

6560641 is an frugal number, since it uses more digits than its factorization.

6560641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 6560641 is about 2561.3748261432. The cubic root of 6560641 is about 187.2041295172.

It can be divided in two parts, 65 and 60641, that added together give a palindrome (60706).

The spelling of 6560641 in words is "six million, five hundred sixty thousand, six hundred forty-one".