679654036837 has 2 divisors, whose sum is σ = 679654036838. Its totient is φ = 679654036836.

The previous prime is 679654036781. The next prime is 679654036879. The reversal of 679654036837 is 738630456976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671131239076 + 8522797761 = 819226^2 + 92319^2 .

It is a cyclic number.

It is not a de Polignac number, because 679654036837 - 2²⁷ = 679519819109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679654036337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339827018418 + 339827018419.

It is an arithmetic number, because the mean of its divisors is an integer number (339827018419).

Almost surely, 2^679654036837 is an apocalyptic number.

It is an amenable number.

679654036837 is a deficient number, since it is larger than the sum of its proper divisors (1).

679654036837 is an equidigital number, since it uses as much as digits as its factorization.

679654036837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137168640, while the sum is 64.

The spelling of 679654036837 in words is "six hundred seventy-nine billion, six hundred fifty-four million, thirty-six thousand, eight hundred thirty-seven".