3644556 has 12 divisors (see below), whose sum is σ = 8503992. Its totient is φ = 1214848.

The previous prime is 3644513. The next prime is 3644569. The reversal of 3644556 is 6554463.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151845 + ... + 151868.

It is an arithmetic number, because the mean of its divisors is an integer number (708666).

Almost surely, 2^3644556 is an apocalyptic number.

It is an amenable number.

3644556 is an abundant number, since it is smaller than the sum of its proper divisors (4859436).

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

3644556 is a wasteful number, since it uses less digits than its factorization.

3644556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303720 (or 303718 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 3644556 is about 1909.0720258806. The cubic root of 3644556 is about 153.8915861462.

The spelling of 3644556 in words is "three million, six hundred forty-four thousand, five hundred fifty-six".