676670081 has 2 divisors, whose sum is σ = 676670082. Its totient is φ = 676670080.

The previous prime is 676670063. The next prime is 676670101. The reversal of 676670081 is 180076676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423701056 + 252969025 = 20584^2 + 15905^2 .

It is a cyclic number.

It is not a de Polignac number, because 676670081 - 2⁶ = 676670017 is a prime.

It is a super-2 number, since 2×676670081² = 915764797041093122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (676670041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338335040 + 338335041.

It is an arithmetic number, because the mean of its divisors is an integer number (338335041).

Almost surely, 2^676670081 is an apocalyptic number.

It is an amenable number.

676670081 is a deficient number, since it is larger than the sum of its proper divisors (1).

676670081 is an equidigital number, since it uses as much as digits as its factorization.

676670081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 676670081 is about 26012.8829813229. The cubic root of 676670081 is about 877.9281843596.

The spelling of 676670081 in words is "six hundred seventy-six million, six hundred seventy thousand, eighty-one".