6689638796 has 6 divisors (see below), whose sum is σ = 11706867900. Its totient is φ = 3344819396.

The previous prime is 6689638793. The next prime is 6689638799. The reversal of 6689638796 is 6978369866.

It is an interprime number because it is at equal distance from previous prime (6689638793) and next prime (6689638799).

It is not an unprimeable number, because it can be changed into a prime (6689638793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836204846 + ... + 836204853.

It is an arithmetic number, because the mean of its divisors is an integer number (1951144650).

Almost surely, 2^6689638796 is an apocalyptic number.

It is an amenable number.

6689638796 is a deficient number, since it is larger than the sum of its proper divisors (5017229104).

6689638796 is a wasteful number, since it uses less digits than its factorization.

6689638796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672409703 (or 1672409701 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 68.

The square root of 6689638796 is about 81790.2121038942. The cubic root of 6689638796 is about 1884.2313396291.

The spelling of 6689638796 in words is "six billion, six hundred eighty-nine million, six hundred thirty-eight thousand, seven hundred ninety-six".