3683639 has 4 divisors (see below), whose sum is σ = 3710280. Its totient is φ = 3657000.

The previous prime is 3683627. The next prime is 3683651. The reversal of 3683639 is 9363863.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3683627) and next prime (3683651).

It is a cyclic number.

It is not a de Polignac number, because 3683639 - 2²⁰ = 2635063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3683839) 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, 13112 + ... + 13389.

It is an arithmetic number, because the mean of its divisors is an integer number (927570).

Almost surely, 2^3683639 is an apocalyptic number.

3683639 is a deficient number, since it is larger than the sum of its proper divisors (26641).

3683639 is a wasteful number, since it uses less digits than its factorization.

3683639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26640.

The product of its digits is 69984, while the sum is 38.

The square root of 3683639 is about 1919.2808549037. The cubic root of 3683639 is about 154.4397254087.

The spelling of 3683639 in words is "three million, six hundred eighty-three thousand, six hundred thirty-nine".