676787897 has 2 divisors, whose sum is σ = 676787898. Its totient is φ = 676787896.

The previous prime is 676787873. The next prime is 676787927. The reversal of 676787897 is 798787676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350588176 + 326199721 = 18724^2 + 18061^2 .

It is a cyclic number.

It is not a de Polignac number, because 676787897 - 2⁸ = 676787641 is a prime.

It is not a weakly prime, because it can be changed into another prime (676787807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338393948 + 338393949.

It is an arithmetic number, because the mean of its divisors is an integer number (338393949).

Almost surely, 2^676787897 is an apocalyptic number.

It is an amenable number.

676787897 is a deficient number, since it is larger than the sum of its proper divisors (1).

676787897 is an equidigital number, since it uses as much as digits as its factorization.

676787897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49787136, while the sum is 65.

The square root of 676787897 is about 26015.1474529744. The cubic root of 676787897 is about 877.9791338486.

The spelling of 676787897 in words is "six hundred seventy-six million, seven hundred eighty-seven thousand, eight hundred ninety-seven".