676243613 has 2 divisors, whose sum is σ = 676243614. Its totient is φ = 676243612.

The previous prime is 676243609. The next prime is 676243637. The reversal of 676243613 is 316342676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666775684 + 9467929 = 25822^2 + 3077^2 .

It is a cyclic number.

It is not a de Polignac number, because 676243613 - 2² = 676243609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676243643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338121806 + 338121807.

It is an arithmetic number, because the mean of its divisors is an integer number (338121807).

Almost surely, 2^676243613 is an apocalyptic number.

It is an amenable number.

676243613 is a deficient number, since it is larger than the sum of its proper divisors (1).

676243613 is an equidigital number, since it uses as much as digits as its factorization.

676243613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 676243613 is about 26004.6844433844. The cubic root of 676243613 is about 877.7437089550.

The spelling of 676243613 in words is "six hundred seventy-six million, two hundred forty-three thousand, six hundred thirteen".