6560257 has 6 divisors (see below), whose sum is σ = 7210994. Its totient is φ = 5963760.

The previous prime is 6560243. The next prime is 6560299. The reversal of 6560257 is 7520656.

It can be written as a sum of positive squares in only one way, i.e., 4322241 + 2238016 = 2079^2 + 1496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6560257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6560227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26988 + ... + 27229.

Almost surely, 2^6560257 is an apocalyptic number.

It is an amenable number.

6560257 is a deficient number, since it is larger than the sum of its proper divisors (650737).

6560257 is a wasteful number, since it uses less digits than its factorization.

6560257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54239 (or 54228 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 6560257 is about 2561.2998653028. The cubic root of 6560257 is about 187.2004770394.

The spelling of 6560257 in words is "six million, five hundred sixty thousand, two hundred fifty-seven".