86646864668 has 24 divisors (see below), whose sum is σ = 186624016992. Its totient is φ = 34277880384.

The previous prime is 86646864631. The next prime is 86646864673.

It is a happy number.

86646864668 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 86646864598 and 86646864607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119020055 + ... + 119020782.

It is an arithmetic number, because the mean of its divisors is an integer number (7776000708).

Almost surely, 2^86646864668 is an apocalyptic number.

It is an amenable number.

86646864668 is an abundant number, since it is smaller than the sum of its proper divisors (99977152324).

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

86646864668 is a wasteful number, since it uses less digits than its factorization.

86646864668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238040861 (or 238040859 counting only the distinct ones).

The product of its digits is 382205952, while the sum is 68.

The spelling of 86646864668 in words is "eighty-six billion, six hundred forty-six million, eight hundred sixty-four thousand, six hundred sixty-eight".