679776678029 has 2 divisors, whose sum is σ = 679776678030. Its totient is φ = 679776678028.

The previous prime is 679776677963. The next prime is 679776678041. The reversal of 679776678029 is 920876677976.

679776678029 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., 613919260900 + 65857417129 = 783530^2 + 256627^2 .

It is a cyclic number.

It is not a de Polignac number, because 679776678029 - 2²⁸ = 679508242573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679776648029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339888339014 + 339888339015.

It is an arithmetic number, because the mean of its divisors is an integer number (339888339015).

Almost surely, 2^679776678029 is an apocalyptic number.

It is an amenable number.

679776678029 is a deficient number, since it is larger than the sum of its proper divisors (1).

679776678029 is an equidigital number, since it uses as much as digits as its factorization.

679776678029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672126336, while the sum is 74.

The spelling of 679776678029 in words is "six hundred seventy-nine billion, seven hundred seventy-six million, six hundred seventy-eight thousand, twenty-nine".