3686847 has 4 divisors (see below), whose sum is σ = 4915800. Its totient is φ = 2457896.

The previous prime is 3686833. The next prime is 3686849. The reversal of 3686847 is 7486863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7486863 = 3 ⋅2495621.

It is a cyclic number.

It is not a de Polignac number, because 3686847 - 2⁸ = 3686591 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3686799 and 3686808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614472 + ... + 614477.

It is an arithmetic number, because the mean of its divisors is an integer number (1228950).

Almost surely, 2^3686847 is an apocalyptic number.

3686847 is a deficient number, since it is larger than the sum of its proper divisors (1228953).

3686847 is a wasteful number, since it uses less digits than its factorization.

3686847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228952.

The product of its digits is 193536, while the sum is 42.

The square root of 3686847 is about 1920.1164027215. The cubic root of 3686847 is about 154.4845451178.

The spelling of 3686847 in words is "three million, six hundred eighty-six thousand, eight hundred forty-seven".