677562403697 has 2 divisors, whose sum is σ = 677562403698. Its totient is φ = 677562403696.

The previous prime is 677562403663. The next prime is 677562403733. The reversal of 677562403697 is 796304265776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 625552864561 + 52009539136 = 790919^2 + 228056^2 .

It is a cyclic number.

It is not a de Polignac number, because 677562403697 - 2⁶ = 677562403633 is a prime.

It is not a weakly prime, because it can be changed into another prime (677562405697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338781201848 + 338781201849.

It is an arithmetic number, because the mean of its divisors is an integer number (338781201849).

Almost surely, 2^677562403697 is an apocalyptic number.

It is an amenable number.

677562403697 is a deficient number, since it is larger than the sum of its proper divisors (1).

677562403697 is an equidigital number, since it uses as much as digits as its factorization.

677562403697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 62.

The spelling of 677562403697 in words is "six hundred seventy-seven billion, five hundred sixty-two million, four hundred three thousand, six hundred ninety-seven".