6993071691 has 4 divisors (see below), whose sum is σ = 9324095592. Its totient is φ = 4662047792.

The previous prime is 6993071677. The next prime is 6993071707. The reversal of 6993071691 is 1961703996.

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 6993071691 - 2⁶ = 6993071627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6993071611) 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, 1165511946 + ... + 1165511951.

It is an arithmetic number, because the mean of its divisors is an integer number (2331023898).

Almost surely, 2^6993071691 is an apocalyptic number.

6993071691 is a deficient number, since it is larger than the sum of its proper divisors (2331023901).

6993071691 is a wasteful number, since it uses less digits than its factorization.

6993071691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331023900.

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 6993071691 is about 83624.5878375493. The cubic root of 6993071691 is about 1912.2998611875.

The spelling of 6993071691 in words is "six billion, nine hundred ninety-three million, seventy-one thousand, six hundred ninety-one".