679776677977 has 4 divisors (see below), whose sum is σ = 679781509120. Its totient is φ = 679771846836.

The previous prime is 679776677963. The next prime is 679776678029. The reversal of 679776677977 is 779776677976.

679776677977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 679776677977 - 2³¹ = 677629194329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679776677894 and 679776677903.

It is not an unprimeable number, because it can be changed into a prime (679776677917) 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, 2197977 + ... + 2488102.

It is an arithmetic number, because the mean of its divisors is an integer number (169945377280).

Almost surely, 2^679776677977 is an apocalyptic number.

It is an amenable number.

679776677977 is a deficient number, since it is larger than the sum of its proper divisors (4831143).

679776677977 is a wasteful number, since it uses less digits than its factorization.

679776677977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831142.

The product of its digits is 14408708328, while the sum is 85.

Subtracting 679776677977 from its reverse (779776677976), we obtain a palindrome (99999999999).

The spelling of 679776677977 in words is "six hundred seventy-nine billion, seven hundred seventy-six million, six hundred seventy-seven thousand, nine hundred seventy-seven".