6559009 has 6 divisors (see below), whose sum is σ = 6922770. Its totient is φ = 6213456.

The previous prime is 6559001. The next prime is 6559019. The reversal of 6559009 is 9009556.

It can be written as a sum of positive squares in only one way, i.e., 4528384 + 2030625 = 2128^2 + 1425^2 .

It is not a de Polignac number, because 6559009 - 2³ = 6559001 is a prime.

It is a Duffinian number.

6559009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6559001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8724 + ... + 9445.

It is an arithmetic number, because the mean of its divisors is an integer number (1153795).

Almost surely, 2^6559009 is an apocalyptic number.

It is an amenable number.

6559009 is a deficient number, since it is larger than the sum of its proper divisors (363761).

6559009 is a wasteful number, since it uses less digits than its factorization.

6559009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18207 (or 18188 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 6559009 is about 2561.0562274187. The cubic root of 6559009 is about 187.1886055018.

The spelling of 6559009 in words is "six million, five hundred fifty-nine thousand, nine".