677007700777 has 2 divisors, whose sum is σ = 677007700778. Its totient is φ = 677007700776.

The previous prime is 677007700709. The next prime is 677007700793. The reversal of 677007700777 is 777007700776.

It is a happy number.

677007700777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369142520041 + 307865180736 = 607571^2 + 554856^2 .

It is a cyclic number.

It is not a de Polignac number, because 677007700777 - 2¹¹ = 677007698729 is a prime.

It is a super-2 number, since 2×677007700777² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677007707777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338503850388 + 338503850389.

It is an arithmetic number, because the mean of its divisors is an integer number (338503850389).

Almost surely, 2^677007700777 is an apocalyptic number.

It is an amenable number.

677007700777 is a deficient number, since it is larger than the sum of its proper divisors (1).

677007700777 is an equidigital number, since it uses as much as digits as its factorization.

677007700777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4941258, while the sum is 55.

Subtracting 677007700777 from its reverse (777007700776), we obtain a palindrome (99999999999).

The spelling of 677007700777 in words is "six hundred seventy-seven billion, seven million, seven hundred thousand, seven hundred seventy-seven".