677828828771 has 2 divisors, whose sum is σ = 677828828772. Its totient is φ = 677828828770.

The previous prime is 677828828753. The next prime is 677828828773. The reversal of 677828828771 is 177828828776.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677828828771 is a prime.

It is a super-2 number, since 2×677828828771² (a number of 24 digits) contains 22 as substring.

Together with 677828828773, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 677828828695 and 677828828704.

It is not a weakly prime, because it can be changed into another prime (677828828773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338914414385 + 338914414386.

It is an arithmetic number, because the mean of its divisors is an integer number (338914414386).

Almost surely, 2^677828828771 is an apocalyptic number.

677828828771 is a deficient number, since it is larger than the sum of its proper divisors (1).

677828828771 is an equidigital number, since it uses as much as digits as its factorization.

677828828771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236027904, while the sum is 71.

The spelling of 677828828771 in words is "six hundred seventy-seven billion, eight hundred twenty-eight million, eight hundred twenty-eight thousand, seven hundred seventy-one".