68686684320 has 48 divisors (see below), whose sum is σ = 216363057120. Its totient is φ = 18316449024.

The previous prime is 68686684289. The next prime is 68686684321. The reversal of 68686684320 is 2348668686.

It is a happy number.

68686684320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (68686684321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71548150 + ... + 71549109.

It is an arithmetic number, because the mean of its divisors is an integer number (4507563690).

Almost surely, 2^68686684320 is an apocalyptic number.

68686684320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68686684320 is an abundant number, since it is smaller than the sum of its proper divisors (147676372800).

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

68686684320 is a wasteful number, since it uses less digits than its factorization.

68686684320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143097277 (or 143097269 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 68686684320 in words is "sixty-eight billion, six hundred eighty-six million, six hundred eighty-four thousand, three hundred twenty".