5991688697 has 2 divisors, whose sum is σ = 5991688698. Its totient is φ = 5991688696.

The previous prime is 5991688693. The next prime is 5991688699. The reversal of 5991688697 is 7968861995.

5991688697 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5681541376 + 310147321 = 75376^2 + 17611^2 .

It is a cyclic number.

It is not a de Polignac number, because 5991688697 - 2² = 5991688693 is a prime.

Together with 5991688699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5991688693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2995844348 + 2995844349.

It is an arithmetic number, because the mean of its divisors is an integer number (2995844349).

Almost surely, 2^5991688697 is an apocalyptic number.

It is an amenable number.

5991688697 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991688697 is an equidigital number, since it uses as much as digits as its factorization.

5991688697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 68.

The square root of 5991688697 is about 77405.9991021368. Note that the first 3 decimals coincide. The cubic root of 5991688697 is about 1816.2811695719.

The spelling of 5991688697 in words is "five billion, nine hundred ninety-one million, six hundred eighty-eight thousand, six hundred ninety-seven".