3686689899 has 6 divisors (see below), whose sum is σ = 5325218756. Its totient is φ = 2457793260.

The previous prime is 3686689891. The next prime is 3686689913. The reversal of 3686689899 is 9989866863.

It is not a de Polignac number, because 3686689899 - 2³ = 3686689891 is a prime.

It is a super-2 number, since 2×3686689899² = 27183364822777260402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3686689891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204816097 + ... + 204816114.

Almost surely, 2^3686689899 is an apocalyptic number.

3686689899 is a deficient number, since it is larger than the sum of its proper divisors (1638528857).

3686689899 is a wasteful number, since it uses less digits than its factorization.

3686689899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409632217 (or 409632214 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

The square root of 3686689899 is about 60718.1183749958. The cubic root of 3686689899 is about 1544.8235082901.

The spelling of 3686689899 in words is "three billion, six hundred eighty-six million, six hundred eighty-nine thousand, eight hundred ninety-nine".