676062665021 has 2 divisors, whose sum is σ = 676062665022. Its totient is φ = 676062665020.

The previous prime is 676062665009. The next prime is 676062665099. The reversal of 676062665021 is 120566260676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672586972996 + 3475692025 = 820114^2 + 58955^2 .

It is a cyclic number.

It is not a de Polignac number, because 676062665021 - 2⁶ = 676062664957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676062665221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338031332510 + 338031332511.

It is an arithmetic number, because the mean of its divisors is an integer number (338031332511).

Almost surely, 2^676062665021 is an apocalyptic number.

It is an amenable number.

676062665021 is a deficient number, since it is larger than the sum of its proper divisors (1).

676062665021 is an equidigital number, since it uses as much as digits as its factorization.

676062665021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 676062665021 in words is "six hundred seventy-six billion, sixty-two million, six hundred sixty-five thousand, twenty-one".