676670581 has 2 divisors, whose sum is σ = 676670582. Its totient is φ = 676670580.

The previous prime is 676670513. The next prime is 676670623. The reversal of 676670581 is 185076676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 676468081 + 202500 = 26009^2 + 450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676670581 is a prime.

It is a super-2 number, since 2×676670581² = 915766150381755122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676670081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338335290 + 338335291.

It is an arithmetic number, because the mean of its divisors is an integer number (338335291).

Almost surely, 2^676670581 is an apocalyptic number.

It is an amenable number.

676670581 is a deficient number, since it is larger than the sum of its proper divisors (1).

676670581 is an equidigital number, since it uses as much as digits as its factorization.

676670581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 676670581 is about 26012.8925919437. The cubic root of 676670581 is about 877.9284005969.

The spelling of 676670581 in words is "six hundred seventy-six million, six hundred seventy thousand, five hundred eighty-one".