68445324684 has 72 divisors (see below), whose sum is σ = 189721323792. Its totient is φ = 20633518080.

The previous prime is 68445324653. The next prime is 68445324721. The reversal of 68445324684 is 48642354486.

It is a happy number.

68445324684 is a `hidden beast` number, since 6 + 8 + 44 + 532 + 4 + 68 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 68445324684.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 371349 + ... + 524204.

It is an arithmetic number, because the mean of its divisors is an integer number (2635018386).

Almost surely, 2^68445324684 is an apocalyptic number.

It is an amenable number.

68445324684 is an abundant number, since it is smaller than the sum of its proper divisors (121275999108).

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

68445324684 is a wasteful number, since it uses less digits than its factorization.

68445324684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895767 (or 895762 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 54.

It can be divided in two parts, 68445 and 324684, that added together give a square (393129 = 627²).

The spelling of 68445324684 in words is "sixty-eight billion, four hundred forty-five million, three hundred twenty-four thousand, six hundred eighty-four".