3221636 has 48 divisors (see below), whose sum is σ = 6713280. Its totient is φ = 1336320.

The previous prime is 3221629. The next prime is 3221641. The reversal of 3221636 is 6361223.

Its product of digits (1296) is a multiple of the sum of its prime divisors (162).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44096 + ... + 44168.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

Almost surely, 2^3221636 is an apocalyptic number.

It is an amenable number.

3221636 is an abundant number, since it is smaller than the sum of its proper divisors (3491644).

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

3221636 is a wasteful number, since it uses less digits than its factorization.

3221636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 162 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 3221636 is about 1794.8916401833. The cubic root of 3221636 is about 147.6926296790.

Adding to 3221636 its reverse (6361223), we get a palindrome (9582859).

The spelling of 3221636 in words is "three million, two hundred twenty-one thousand, six hundred thirty-six".