6550809 has 8 divisors (see below), whose sum is σ = 8749440. Its totient is φ = 4359696.

The previous prime is 6550799. The next prime is 6550811. The reversal of 6550809 is 9080556.

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

It is not a de Polignac number, because 6550809 - 2⁴ = 6550793 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6550809.

It is not an unprimeable number, because it can be changed into a prime (6550879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (1093680).

Almost surely, 2^6550809 is an apocalyptic number.

It is an amenable number.

6550809 is a deficient number, since it is larger than the sum of its proper divisors (2198631).

6550809 is a wasteful number, since it uses less digits than its factorization.

6550809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 6550809 is about 2559.4548247625. The cubic root of 6550809 is about 187.1105659348.

The spelling of 6550809 in words is "six million, five hundred fifty thousand, eight hundred nine".