6671791709 has 8 divisors (see below), whose sum is σ = 7286571552. Its totient is φ = 6058387440.

The previous prime is 6671791699. The next prime is 6671791741. The reversal of 6671791709 is 9071971766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6671791709 - 2⁸ = 6671791453 is a prime.

It is a super-2 number, since 2×6671791709² = 89025609216562281362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6671791109) 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, 333734 + ... + 353159.

It is an arithmetic number, because the mean of its divisors is an integer number (910821444).

Almost surely, 2^6671791709 is an apocalyptic number.

It is an amenable number.

6671791709 is a deficient number, since it is larger than the sum of its proper divisors (614779843).

6671791709 is a wasteful number, since it uses less digits than its factorization.

6671791709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687787.

The product of its (nonzero) digits is 1000188, while the sum is 53.

The square root of 6671791709 is about 81681.0364099281. The cubic root of 6671791709 is about 1882.5542191768.

The spelling of 6671791709 in words is "six billion, six hundred seventy-one million, seven hundred ninety-one thousand, seven hundred nine".