676141681 has 2 divisors, whose sum is σ = 676141682. Its totient is φ = 676141680.

The previous prime is 676141639. The next prime is 676141691. The reversal of 676141681 is 186141676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656640625 + 19501056 = 25625^2 + 4416^2 .

It is a cyclic number.

It is not a de Polignac number, because 676141681 - 2⁷ = 676141553 is a prime.

It is a super-2 number, since 2×676141681² = 914335145571011522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (676141621) 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, 338070840 + 338070841.

It is an arithmetic number, because the mean of its divisors is an integer number (338070841).

Almost surely, 2^676141681 is an apocalyptic number.

It is an amenable number.

676141681 is a deficient number, since it is larger than the sum of its proper divisors (1).

676141681 is an equidigital number, since it uses as much as digits as its factorization.

676141681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 676141681 is about 26002.7244918682. The cubic root of 676141681 is about 877.6996051904.

The spelling of 676141681 in words is "six hundred seventy-six million, one hundred forty-one thousand, six hundred eighty-one".