6981169679 has 8 divisors (see below), whose sum is σ = 7629212880. Its totient is φ = 6335358400.

The previous prime is 6981169633. The next prime is 6981169687. The reversal of 6981169679 is 9769611896.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6981169679 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 (6981169619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551432 + ... + 563949.

It is an arithmetic number, because the mean of its divisors is an integer number (953651610).

Almost surely, 2^6981169679 is an apocalyptic number.

6981169679 is a deficient number, since it is larger than the sum of its proper divisors (648043201).

6981169679 is a wasteful number, since it uses less digits than its factorization.

6981169679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115961.

The product of its digits is 8817984, while the sum is 62.

The square root of 6981169679 is about 83553.3941800092. The cubic root of 6981169679 is about 1911.2143515316.

The spelling of 6981169679 in words is "six billion, nine hundred eighty-one million, one hundred sixty-nine thousand, six hundred seventy-nine".