6559 has 4 divisors (see below), whose sum is σ = 7504. Its totient is φ = 5616.

The previous prime is 6553. The next prime is 6563. The reversal of 6559 is 9556.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6559 - 2³ = 6551 is a prime.

6559 is a lucky number.

It is a plaindrome in base 14 and base 16.

It is a nialpdrome in base 3 and base 9.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551) 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, 462 + ... + 475.

It is an arithmetic number, because the mean of its divisors is an integer number (1876).

2⁶⁵⁵⁹ is an apocalyptic number.

6559 is a deficient number, since it is larger than the sum of its proper divisors (945).

6559 is an equidigital number, since it uses as much as digits as its factorization.

6559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its digits is 1350, while the sum is 25.

The square root of 6559 is about 80.9876533800. The cubic root of 6559 is about 18.7188519884.

It can be divided in two parts, 6 and 559, that added together give a palindrome (565).

The spelling of 6559 in words is "six thousand, five hundred fifty-nine".