3644368 has 40 divisors (see below), whose sum is σ = 8693888. Its totient is φ = 1441152.

The previous prime is 3644357. The next prime is 3644411. The reversal of 3644368 is 8634463.

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 7 ways as a sum of consecutive naturals, for example, 205 + ... + 2707.

Almost surely, 2^3644368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4346944).

3644368 is an abundant number, since it is smaller than the sum of its proper divisors (5049520).

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

3644368 is a wasteful number, since it uses less digits than its factorization.

3644368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2525 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 3644368 is about 1909.0227866634. The cubic root of 3644368 is about 153.8889399971. Note that the first 3 decimals are identical.

The spelling of 3644368 in words is "three million, six hundred forty-four thousand, three hundred sixty-eight".