64680171686 has 8 divisors (see below), whose sum is σ = 104483354304. Its totient is φ = 29852386920.

The previous prime is 64680171667. The next prime is 64680171701. The reversal of 64680171686 is 68617108646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243849430 + ... + 1243849481.

It is an arithmetic number, because the mean of its divisors is an integer number (13060419288).

Almost surely, 2^64680171686 is an apocalyptic number.

64680171686 is a deficient number, since it is larger than the sum of its proper divisors (39803182618).

64680171686 is a wasteful number, since it uses less digits than its factorization.

64680171686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487698926.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 64680171686 in words is "sixty-four billion, six hundred eighty million, one hundred seventy-one thousand, six hundred eighty-six".