3681684 has 36 divisors (see below), whose sum is σ = 9609600. Its totient is φ = 1187280.

The previous prime is 3681683. The next prime is 3681697. The reversal of 3681684 is 4861863.

It is a happy number.

3681684 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 534 + ... + 2765.

Almost surely, 2^3681684 is an apocalyptic number.

It is an amenable number.

3681684 is an abundant number, since it is smaller than the sum of its proper divisors (5927916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681684 is a wasteful number, since it uses less digits than its factorization.

3681684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340 (or 3335 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3681684 is about 1918.7714819644. The cubic root of 3681684 is about 154.4123988898.

The spelling of 3681684 in words is "three million, six hundred eighty-one thousand, six hundred eighty-four".