3684621 has 8 divisors (see below), whose sum is σ = 4946400. Its totient is φ = 2439632.

The previous prime is 3684607. The next prime is 3684641. The reversal of 3684621 is 1264863.

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 3684621 - 2⁵ = 3684589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3684601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3675 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (618300).

Almost surely, 2^3684621 is an apocalyptic number.

It is an amenable number.

3684621 is a deficient number, since it is larger than the sum of its proper divisors (1261779).

3684621 is a wasteful number, since it uses less digits than its factorization.

3684621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8395.

The product of its digits is 6912, while the sum is 30.

The square root of 3684621 is about 1919.5366628434. The cubic root of 3684621 is about 154.4534479202.

The spelling of 3684621 in words is "three million, six hundred eighty-four thousand, six hundred twenty-one".