679760363509 has 2 divisors, whose sum is σ = 679760363510. Its totient is φ = 679760363508.

The previous prime is 679760363507. The next prime is 679760363533. The reversal of 679760363509 is 905363067976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623709801009 + 56050562500 = 789753^2 + 236750^2 .

It is a cyclic number.

It is not a de Polignac number, because 679760363509 - 2¹ = 679760363507 is a prime.

Together with 679760363507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679760363507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339880181754 + 339880181755.

It is an arithmetic number, because the mean of its divisors is an integer number (339880181755).

Almost surely, 2^679760363509 is an apocalyptic number.

It is an amenable number.

679760363509 is a deficient number, since it is larger than the sum of its proper divisors (1).

679760363509 is an equidigital number, since it uses as much as digits as its factorization.

679760363509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38578680, while the sum is 61.

The spelling of 679760363509 in words is "six hundred seventy-nine billion, seven hundred sixty million, three hundred sixty-three thousand, five hundred nine".