6681885609 has 8 divisors (see below), whose sum is σ = 10181920960. Its totient is φ = 3818220336.

The previous prime is 6681885601. The next prime is 6681885659. The reversal of 6681885609 is 9065881866.

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

It is not a de Polignac number, because 6681885609 - 2³ = 6681885601 is a prime.

It is a super-2 number, since 2×6681885609² = 89295190583522601762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6681885601) 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, 159092494 + ... + 159092535.

It is an arithmetic number, because the mean of its divisors is an integer number (1272740120).

Almost surely, 2^6681885609 is an apocalyptic number.

It is an amenable number.

6681885609 is a deficient number, since it is larger than the sum of its proper divisors (3500035351).

6681885609 is a wasteful number, since it uses less digits than its factorization.

6681885609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318185039.

The product of its (nonzero) digits is 4976640, while the sum is 57.

The square root of 6681885609 is about 81742.8015729826. The cubic root of 6681885609 is about 1883.5031266518.

The spelling of 6681885609 in words is "six billion, six hundred eighty-one million, eight hundred eighty-five thousand, six hundred nine".