679400066720 has 48 divisors (see below), whose sum is σ = 1615306173768. Its totient is φ = 270029061120.

The previous prime is 679400066669. The next prime is 679400066773. The reversal of 679400066720 is 27660004976.

679400066720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 333293763856 + 346106302864 = 577316^2 + 588308^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13497971 + ... + 13548210.

Almost surely, 2^679400066720 is an apocalyptic number.

It is an amenable number.

679400066720 is an abundant number, since it is smaller than the sum of its proper divisors (935906107048).

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

679400066720 is a wasteful number, since it uses less digits than its factorization.

679400066720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27046353 (or 27046345 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 679400066720 in words is "six hundred seventy-nine billion, four hundred million, sixty-six thousand, seven hundred twenty".