679784967680 has 960 divisors, whose sum is σ = 2228677355520. Its totient is φ = 193240498176.

The previous prime is 679784967671. The next prime is 679784967709. The reversal of 679784967680 is 86769487976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1548484901 + ... + 1548485339.

It is an arithmetic number, because the mean of its divisors is an integer number (2321538912).

Almost surely, 2^679784967680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679784967680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114338677760).

679784967680 is an abundant number, since it is smaller than the sum of its proper divisors (1548892387840).

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

679784967680 is a wasteful number, since it uses less digits than its factorization.

679784967680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 1536288768, while the sum is 77.

The spelling of 679784967680 in words is "six hundred seventy-nine billion, seven hundred eighty-four million, nine hundred sixty-seven thousand, six hundred eighty".