6997831679 has 4 divisors (see below), whose sum is σ = 6999759384. Its totient is φ = 6995903976.

The previous prime is 6997831667. The next prime is 6997831681. The reversal of 6997831679 is 9761387996.

It is a happy number.

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 6997831679 - 2⁴ = 6997831663 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 (6997831609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958397 + ... + 965670.

It is an arithmetic number, because the mean of its divisors is an integer number (1749939846).

Almost surely, 2^6997831679 is an apocalyptic number.

6997831679 is a deficient number, since it is larger than the sum of its proper divisors (1927705).

6997831679 is a wasteful number, since it uses less digits than its factorization.

6997831679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927704.

The product of its digits is 30862944, while the sum is 65.

The square root of 6997831679 is about 83653.0434533018. The cubic root of 6997831679 is about 1912.7336457625.

The spelling of 6997831679 in words is "six billion, nine hundred ninety-seven million, eight hundred thirty-one thousand, six hundred seventy-nine".