6991246079 has 8 divisors (see below), whose sum is σ = 7233300000. Its totient is φ = 6749257312.

The previous prime is 6991246063. The next prime is 6991246109. The reversal of 6991246079 is 9706421996.

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 6991246079 - 2⁴ = 6991246063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6991246079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991246019) 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, 319997 + ... + 341145.

It is an arithmetic number, because the mean of its divisors is an integer number (904162500).

Almost surely, 2^6991246079 is an apocalyptic number.

6991246079 is a deficient number, since it is larger than the sum of its proper divisors (242053921).

6991246079 is a wasteful number, since it uses less digits than its factorization.

6991246079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32577.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 6991246079 is about 83613.6716033927. The cubic root of 6991246079 is about 1912.1334383064.

The spelling of 6991246079 in words is "six billion, nine hundred ninety-one million, two hundred forty-six thousand, seventy-nine".