679656743860 has 12 divisors (see below), whose sum is σ = 1427279162148. Its totient is φ = 271862697536.

The previous prime is 679656743851. The next prime is 679656743863. The reversal of 679656743860 is 68347656976.

It can be written as a sum of positive squares in 2 ways, for example, as 343159296804 + 336497447056 = 585798^2 + 580084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679656743863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16991418577 + ... + 16991418616.

It is an arithmetic number, because the mean of its divisors is an integer number (118939930179).

Almost surely, 2^679656743860 is an apocalyptic number.

It is an amenable number.

679656743860 is an abundant number, since it is smaller than the sum of its proper divisors (747622418288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679656743860 is a wasteful number, since it uses less digits than its factorization.

679656743860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33982837202 (or 33982837200 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 67.

The spelling of 679656743860 in words is "six hundred seventy-nine billion, six hundred fifty-six million, seven hundred forty-three thousand, eight hundred sixty".