6605116559 has 4 divisors (see below), whose sum is σ = 6609682704. Its totient is φ = 6600550416.

The previous prime is 6605116541. The next prime is 6605116561. The reversal of 6605116559 is 9556115066.

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 6605116559 - 2²⁰ = 6604067983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605116519) 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, 2280902 + ... + 2283795.

It is an arithmetic number, because the mean of its divisors is an integer number (1652420676).

Almost surely, 2^6605116559 is an apocalyptic number.

6605116559 is a deficient number, since it is larger than the sum of its proper divisors (4566145).

6605116559 is a wasteful number, since it uses less digits than its factorization.

6605116559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566144.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 6605116559 is about 81271.8681894295. The cubic root of 6605116559 is about 1876.2620536988.

The spelling of 6605116559 in words is "six billion, six hundred five million, one hundred sixteen thousand, five hundred fifty-nine".