3645204 has 12 divisors (see below), whose sum is σ = 8505504. Its totient is φ = 1215064.

The previous prime is 3645193. The next prime is 3645227. The reversal of 3645204 is 4025463.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151872 + ... + 151895.

It is an arithmetic number, because the mean of its divisors is an integer number (708792).

Almost surely, 2^3645204 is an apocalyptic number.

It is an amenable number.

3645204 is an abundant number, since it is smaller than the sum of its proper divisors (4860300).

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

3645204 is a wasteful number, since it uses less digits than its factorization.

3645204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303774 (or 303772 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3645204 is about 1909.2417343019. The cubic root of 3645204 is about 153.9007062181.

The spelling of 3645204 in words is "three million, six hundred forty-five thousand, two hundred four".