3686686866863 has 36 divisors (see below), whose sum is σ = 5076518703480. Its totient is φ = 2651762725920.

The previous prime is 3686686866823. The next prime is 3686686866887.

3686686866863 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3686686866863 - 2¹⁴ = 3686686850479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686686866803) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23838533 + ... + 23992686.

It is an arithmetic number, because the mean of its divisors is an integer number (141014408430).

Almost surely, 2^{3686686866863} is an apocalyptic number.

3686686866863 is a deficient number, since it is larger than the sum of its proper divisors (1389831836617).

3686686866863 is a wasteful number, since it uses less digits than its factorization.

3686686866863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47831268 (or 47831250 counting only the distinct ones).

The product of its digits is 10319560704, while the sum is 80.

The spelling of 3686686866863 in words is "three trillion, six hundred eighty-six billion, six hundred eighty-six million, eight hundred sixty-six thousand, eight hundred sixty-three".