676489997 has 2 divisors, whose sum is σ = 676489998. Its totient is φ = 676489996.

The previous prime is 676489991. The next prime is 676490057. The reversal of 676489997 is 799984676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507645961 + 168844036 = 22531^2 + 12994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676489997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676489991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338244998 + 338244999.

It is an arithmetic number, because the mean of its divisors is an integer number (338244999).

Almost surely, 2^676489997 is an apocalyptic number.

It is an amenable number.

676489997 is a deficient number, since it is larger than the sum of its proper divisors (1).

676489997 is an equidigital number, since it uses as much as digits as its factorization.

676489997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41150592, while the sum is 65.

The square root of 676489997 is about 26009.4213122861. The cubic root of 676489997 is about 877.8502956657.

The spelling of 676489997 in words is "six hundred seventy-six million, four hundred eighty-nine thousand, nine hundred ninety-seven".