3686047865 has 8 divisors (see below), whose sum is σ = 4683449160. Its totient is φ = 2775377152.

The previous prime is 3686047853. The next prime is 3686047879. The reversal of 3686047865 is 5687406863.

It can be written as a sum of positive squares in 4 ways, for example, as 118613881 + 3567433984 = 10891^2 + 59728^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3686047865 - 2⁶ = 3686047801 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21682550 + ... + 21682719.

It is an arithmetic number, because the mean of its divisors is an integer number (585431145).

Almost surely, 2^3686047865 is an apocalyptic number.

It is an amenable number.

3686047865 is a deficient number, since it is larger than the sum of its proper divisors (997401295).

3686047865 is a wasteful number, since it uses less digits than its factorization.

3686047865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43365291.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The square root of 3686047865 is about 60712.8311397187. The cubic root of 3686047865 is about 1544.7338265047.

The spelling of 3686047865 in words is "three billion, six hundred eighty-six million, forty-seven thousand, eight hundred sixty-five".