677828828777 has 4 divisors (see below), whose sum is σ = 677840495616. Its totient is φ = 677817161940.

The previous prime is 677828828773. The next prime is 677828828779. The reversal of 677828828777 is 777828828776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 677828828777 - 2² = 677828828773 is a prime.

It is a super-2 number, since 2×677828828777² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 677828828698 and 677828828707.

It is not an unprimeable number, because it can be changed into a prime (677828828771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5745833 + ... + 5862614.

It is an arithmetic number, because the mean of its divisors is an integer number (169460123904).

Almost surely, 2^677828828777 is an apocalyptic number.

It is an amenable number.

677828828777 is a deficient number, since it is larger than the sum of its proper divisors (11666839).

677828828777 is a wasteful number, since it uses less digits than its factorization.

677828828777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11666838.

The product of its digits is 1652195328, while the sum is 77.

Subtracting 677828828777 from its reverse (777828828776), we obtain a palindrome (99999999999).

The spelling of 677828828777 in words is "six hundred seventy-seven billion, eight hundred twenty-eight million, eight hundred twenty-eight thousand, seven hundred seventy-seven".