676443697 has 2 divisors, whose sum is σ = 676443698. Its totient is φ = 676443696.

The previous prime is 676443683. The next prime is 676443727. The reversal of 676443697 is 796344676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 673091136 + 3352561 = 25944^2 + 1831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676443697 is a prime.

It is a super-2 number, since 2×676443697² = 915152150422055618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (676443197) 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, 338221848 + 338221849.

It is an arithmetic number, because the mean of its divisors is an integer number (338221849).

Almost surely, 2^676443697 is an apocalyptic number.

It is an amenable number.

676443697 is a deficient number, since it is larger than the sum of its proper divisors (1).

676443697 is an equidigital number, since it uses as much as digits as its factorization.

676443697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 52.

The square root of 676443697 is about 26008.5312349621. The cubic root of 676443697 is about 877.8302680741.

The spelling of 676443697 in words is "six hundred seventy-six million, four hundred forty-three thousand, six hundred ninety-seven".