676748861 has 2 divisors, whose sum is σ = 676748862. Its totient is φ = 676748860.

The previous prime is 676748851. The next prime is 676748887. The reversal of 676748861 is 168847676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658948900 + 17799961 = 25670^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 676748861 - 2¹⁴ = 676732477 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676748851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338374430 + 338374431.

It is an arithmetic number, because the mean of its divisors is an integer number (338374431).

Almost surely, 2^676748861 is an apocalyptic number.

It is an amenable number.

676748861 is a deficient number, since it is larger than the sum of its proper divisors (1).

676748861 is an equidigital number, since it uses as much as digits as its factorization.

676748861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 53.

The square root of 676748861 is about 26014.3971869425. The cubic root of 676748861 is about 877.9622533987.

The spelling of 676748861 in words is "six hundred seventy-six million, seven hundred forty-eight thousand, eight hundred sixty-one".