676741649 has 2 divisors, whose sum is σ = 676741650. Its totient is φ = 676741648.

The previous prime is 676741631. The next prime is 676741669. The reversal of 676741649 is 946147676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351300049 + 325441600 = 18743^2 + 18040^2 .

It is a cyclic number.

It is not a de Polignac number, because 676741649 - 2⁸ = 676741393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 676741597 and 676741606.

It is not a weakly prime, because it can be changed into another prime (676741619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338370824 + 338370825.

It is an arithmetic number, because the mean of its divisors is an integer number (338370825).

Almost surely, 2^676741649 is an apocalyptic number.

It is an amenable number.

676741649 is a deficient number, since it is larger than the sum of its proper divisors (1).

676741649 is an equidigital number, since it uses as much as digits as its factorization.

676741649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The square root of 676741649 is about 26014.2585710222. The cubic root of 676741649 is about 877.9591346218.

The spelling of 676741649 in words is "six hundred seventy-six million, seven hundred forty-one thousand, six hundred forty-nine".