679664611841 has 2 divisors, whose sum is σ = 679664611842. Its totient is φ = 679664611840.

The previous prime is 679664611771. The next prime is 679664611849. The reversal of 679664611841 is 148116466976.

679664611841 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., 472421154241 + 207243457600 = 687329^2 + 455240^2 .

It is a cyclic number.

It is not a de Polignac number, because 679664611841 - 2²⁶ = 679597502977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (679664611849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339832305920 + 339832305921.

It is an arithmetic number, because the mean of its divisors is an integer number (339832305921).

Almost surely, 2^679664611841 is an apocalyptic number.

It is an amenable number.

679664611841 is a deficient number, since it is larger than the sum of its proper divisors (1).

679664611841 is an equidigital number, since it uses as much as digits as its factorization.

679664611841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 59.

The spelling of 679664611841 in words is "six hundred seventy-nine billion, six hundred sixty-four million, six hundred eleven thousand, eight hundred forty-one".