3864673507686 has 64 divisors (see below), whose sum is σ = 7909516876800. Its totient is φ = 1258537948416.

The previous prime is 3864673507661. The next prime is 3864673507753. The reversal of 3864673507686 is 6867053764683.

It is a super-2 number, since 2×3864673507686² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3864673507686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186517635 + ... + 186538353.

It is an arithmetic number, because the mean of its divisors is an integer number (123586201200).

Almost surely, 2^{3864673507686} is an apocalyptic number.

3864673507686 is an abundant number, since it is smaller than the sum of its proper divisors (4044843369114).

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

3864673507686 is a wasteful number, since it uses less digits than its factorization.

3864673507686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24813.

The product of its (nonzero) digits is 731566080, while the sum is 69.

The spelling of 3864673507686 in words is "three trillion, eight hundred sixty-four billion, six hundred seventy-three million, five hundred seven thousand, six hundred eighty-six".