677636084513 has 2 divisors, whose sum is σ = 677636084514. Its totient is φ = 677636084512.

The previous prime is 677636084509. The next prime is 677636084549. The reversal of 677636084513 is 315480636776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350140842529 + 327495241984 = 591727^2 + 572272^2 .

It is a cyclic number.

It is not a de Polignac number, because 677636084513 - 2² = 677636084509 is a prime.

It is not a weakly prime, because it can be changed into another prime (677636084113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338818042256 + 338818042257.

It is an arithmetic number, because the mean of its divisors is an integer number (338818042257).

Almost surely, 2^677636084513 is an apocalyptic number.

It is an amenable number.

677636084513 is a deficient number, since it is larger than the sum of its proper divisors (1).

677636084513 is an equidigital number, since it uses as much as digits as its factorization.

677636084513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 677636084513 in words is "six hundred seventy-seven billion, six hundred thirty-six million, eighty-four thousand, five hundred thirteen".