86686840068 has 24 divisors (see below), whose sum is σ = 206085696768. Its totient is φ = 28350412896.

The previous prime is 86686840043. The next prime is 86686840087. The reversal of 86686840068 is 86004868668.

It is a junction number, because it is equal to n+sod(n) for n = 86686839993 and 86686840020.

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, 68149396 + ... + 68150667.

It is an arithmetic number, because the mean of its divisors is an integer number (8586904032).

Almost surely, 2^86686840068 is an apocalyptic number.

It is an amenable number.

86686840068 is an abundant number, since it is smaller than the sum of its proper divisors (119398856700).

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

86686840068 is a wasteful number, since it uses less digits than its factorization.

86686840068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136300123 (or 136300121 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 60.

The spelling of 86686840068 in words is "eighty-six billion, six hundred eighty-six million, eight hundred forty thousand, sixty-eight".