5688137681 has 2 divisors, whose sum is σ = 5688137682. Its totient is φ = 5688137680.

The previous prime is 5688137647. The next prime is 5688137713. The reversal of 5688137681 is 1867318865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5440390081 + 247747600 = 73759^2 + 15740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5688137681 is a prime.

It is a super-2 number, since 2×5688137681² = 64709820556024115522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5688107681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2844068840 + 2844068841.

It is an arithmetic number, because the mean of its divisors is an integer number (2844068841).

Almost surely, 2^5688137681 is an apocalyptic number.

It is an amenable number.

5688137681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5688137681 is an equidigital number, since it uses as much as digits as its factorization.

5688137681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 53.

The square root of 5688137681 is about 75419.7433103561. The cubic root of 5688137681 is about 1785.0759545759.

The spelling of 5688137681 in words is "five billion, six hundred eighty-eight million, one hundred thirty-seven thousand, six hundred eighty-one".