3636644 has 12 divisors (see below), whose sum is σ = 6942768. Its totient is φ = 1653000.

The previous prime is 3636631. The next prime is 3636667. The reversal of 3636644 is 4466363.

It is a self number, because there is not a number n which added to its sum of digits gives 3636644.

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, 41282 + ... + 41369.

It is an arithmetic number, because the mean of its divisors is an integer number (578564).

Almost surely, 2^3636644 is an apocalyptic number.

It is an amenable number.

3636644 is a deficient number, since it is larger than the sum of its proper divisors (3306124).

3636644 is a wasteful number, since it uses less digits than its factorization.

3636644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82666 (or 82664 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 3636644 is about 1906.9986890399. The cubic root of 3636644 is about 153.7801439123.

It can be divided in two parts, 363 and 6644, that added together give a palindrome (7007).

The spelling of 3636644 in words is "three million, six hundred thirty-six thousand, six hundred forty-four".