3686868687 has 16 divisors (see below), whose sum is σ = 5098659840. Its totient is φ = 2366939232.

The previous prime is 3686868683. The next prime is 3686868739. The reversal of 3686868687 is 7868686863.

It is not a de Polignac number, because 3686868687 - 2² = 3686868683 is a prime.

It is a super-2 number, since 2×3686868687² = 27186001430362207938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686868683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22003 + ... + 88644.

It is an arithmetic number, because the mean of its divisors is an integer number (318666240).

Almost surely, 2^3686868687 is an apocalyptic number.

3686868687 is a deficient number, since it is larger than the sum of its proper divisors (1411791153).

3686868687 is a wasteful number, since it uses less digits than its factorization.

3686868687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111062.

The product of its digits is 111476736, while the sum is 66.

The square root of 3686868687 is about 60719.5906359718. The cubic root of 3686868687 is about 1544.8484802340.

Multiplying 3686868687 by its sum of digits (66), we get a palindrome (243333333342).

The spelling of 3686868687 in words is "three billion, six hundred eighty-six million, eight hundred sixty-eight thousand, six hundred eighty-seven".