6659009 has 8 divisors (see below), whose sum is σ = 7872960. Its totient is φ = 5510736.

The previous prime is 6658999. The next prime is 6659021. The reversal of 6659009 is 9009566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6659009 - 2¹² = 6654913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6659009.

It is not an unprimeable number, because it can be changed into a prime (6659089) 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, 16199 + ... + 16604.

It is an arithmetic number, because the mean of its divisors is an integer number (984120).

Almost surely, 2^6659009 is an apocalyptic number.

It is an amenable number.

6659009 is a deficient number, since it is larger than the sum of its proper divisors (1213951).

6659009 is a wasteful number, since it uses less digits than its factorization.

6659009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32839.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 6659009 is about 2580.5055706198. The cubic root of 6659009 is about 188.1351167652.

The spelling of 6659009 in words is "six million, six hundred fifty-nine thousand, nine".