676747691 has 2 divisors, whose sum is σ = 676747692. Its totient is φ = 676747690.

The previous prime is 676747663. The next prime is 676747693. The reversal of 676747691 is 196747676.

676747691 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-676747691 is a prime.

Together with 676747693, 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 (676747693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338373845 + 338373846.

It is an arithmetic number, because the mean of its divisors is an integer number (338373846).

Almost surely, 2^676747691 is an apocalyptic number.

676747691 is a deficient number, since it is larger than the sum of its proper divisors (1).

676747691 is an equidigital number, since it uses as much as digits as its factorization.

676747691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2667168, while the sum is 53.

The square root of 676747691 is about 26014.3746993850. The cubic root of 676747691 is about 877.9617474423.

The spelling of 676747691 in words is "six hundred seventy-six million, seven hundred forty-seven thousand, six hundred ninety-one".