3644216 has 8 divisors (see below), whose sum is σ = 6832920. Its totient is φ = 1822104.

The previous prime is 3644213. The next prime is 3644231. The reversal of 3644216 is 6124463.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644213) by changing a digit.

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 as a sum of consecutive naturals, namely, 227756 + ... + 227771.

It is an arithmetic number, because the mean of its divisors is an integer number (854115).

Almost surely, 2^3644216 is an apocalyptic number.

It is an amenable number.

3644216 is a deficient number, since it is larger than the sum of its proper divisors (3188704).

3644216 is a wasteful number, since it uses less digits than its factorization.

3644216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455533 (or 455529 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 3644216 is about 1908.9829753039. The cubic root of 3644216 is about 153.8868004909.

Adding to 3644216 its reverse (6124463), we get a palindrome (9768679).

The spelling of 3644216 in words is "three million, six hundred forty-four thousand, two hundred sixteen".