677828828779 has 2 divisors, whose sum is σ = 677828828780. Its totient is φ = 677828828778.

The previous prime is 677828828773. The next prime is 677828828783. The reversal of 677828828779 is 977828828776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677828828779 - 2³ = 677828828771 is a prime.

It is a super-2 number, since 2×677828828779² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 677828828699 and 677828828708.

It is not a weakly prime, because it can be changed into another prime (677828828771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338914414389 + 338914414390.

It is an arithmetic number, because the mean of its divisors is an integer number (338914414390).

Almost surely, 2^677828828779 is an apocalyptic number.

677828828779 is a deficient number, since it is larger than the sum of its proper divisors (1).

677828828779 is an equidigital number, since it uses as much as digits as its factorization.

677828828779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2124251136, while the sum is 79.

The spelling of 677828828779 in words is "six hundred seventy-seven billion, eight hundred twenty-eight million, eight hundred twenty-eight thousand, seven hundred seventy-nine".