677976203477 has 2 divisors, whose sum is σ = 677976203478. Its totient is φ = 677976203476.

The previous prime is 677976203473. The next prime is 677976203537. The reversal of 677976203477 is 774302679776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627883496881 + 50092706596 = 792391^2 + 223814^2 .

It is a cyclic number.

It is not a de Polignac number, because 677976203477 - 2² = 677976203473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677976203473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338988101738 + 338988101739.

It is an arithmetic number, because the mean of its divisors is an integer number (338988101739).

Almost surely, 2^677976203477 is an apocalyptic number.

It is an amenable number.

677976203477 is a deficient number, since it is larger than the sum of its proper divisors (1).

677976203477 is an equidigital number, since it uses as much as digits as its factorization.

677976203477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130691232, while the sum is 65.

The spelling of 677976203477 in words is "six hundred seventy-seven billion, nine hundred seventy-six million, two hundred three thousand, four hundred seventy-seven".