6699116699 has 4 divisors (see below), whose sum is σ = 7308127320. Its totient is φ = 6090106080.

The previous prime is 6699116687. The next prime is 6699116717. The reversal of 6699116699 is 9966119966.

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 6699116699 - 2²⁰ = 6698068123 is a prime.

6699116699 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6699116639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304505294 + ... + 304505315.

It is an arithmetic number, because the mean of its divisors is an integer number (1827031830).

Almost surely, 2^6699116699 is an apocalyptic number.

6699116699 is a deficient number, since it is larger than the sum of its proper divisors (609010621).

6699116699 is a wasteful number, since it uses less digits than its factorization.

6699116699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609010620.

The product of its digits is 8503056, while the sum is 62.

The square root of 6699116699 is about 81848.1319212601. The cubic root of 6699116699 is about 1885.1207814968.

The spelling of 6699116699 in words is "six billion, six hundred ninety-nine million, one hundred sixteen thousand, six hundred ninety-nine".