3603644 has 12 divisors (see below), whose sum is σ = 6879768. Its totient is φ = 1638000.

The previous prime is 3603623. The next prime is 3603659. The reversal of 3603644 is 4463063.

It is a d-powerful number, because it can be written as 3⁶ + 6⁴ + 0 + 3¹³ + 6⁸ + 4⁸ + 4⁹ .

It is a congruent number.

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, 40907 + ... + 40994.

It is an arithmetic number, because the mean of its divisors is an integer number (573314).

Almost surely, 2^3603644 is an apocalyptic number.

It is an amenable number.

3603644 is a deficient number, since it is larger than the sum of its proper divisors (3276124).

3603644 is a wasteful number, since it uses less digits than its factorization.

3603644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81916 (or 81914 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 3603644 is about 1898.3266315363. The cubic root of 3603644 is about 153.3135807364.

It can be divided in two parts, 360 and 3644, that added together give a palindrome (4004).

The spelling of 3603644 in words is "three million, six hundred three thousand, six hundred forty-four".