8683947691 has 2 divisors, whose sum is σ = 8683947692. Its totient is φ = 8683947690.

The previous prime is 8683947677. The next prime is 8683947703. The reversal of 8683947691 is 1967493868.

8683947691 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 is a cyclic number.

It is not a de Polignac number, because 8683947691 - 2⁷ = 8683947563 is a prime.

It is not a weakly prime, because it can be changed into another prime (8683947611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4341973845 + 4341973846.

It is an arithmetic number, because the mean of its divisors is an integer number (4341973846).

Almost surely, 2^8683947691 is an apocalyptic number.

8683947691 is a deficient number, since it is larger than the sum of its proper divisors (1).

8683947691 is an equidigital number, since it uses as much as digits as its factorization.

8683947691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 61.

The square root of 8683947691 is about 93187.7013934779. The cubic root of 8683947691 is about 2055.4443969583. Note that the first 3 decimals are identical.

The spelling of 8683947691 in words is "eight billion, six hundred eighty-three million, nine hundred forty-seven thousand, six hundred ninety-one".