3644264 has 32 divisors (see below), whose sum is σ = 7482720. Its totient is φ = 1653696.

The previous prime is 3644237. The next prime is 3644279. The reversal of 3644264 is 4624463.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 6707 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (233835).

Almost surely, 2^3644264 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 3644264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3741360).

3644264 is an abundant number, since it is smaller than the sum of its proper divisors (3838456).

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

3644264 is a wasteful number, since it uses less digits than its factorization.

3644264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 605 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 3644264 is about 1908.9955474018. The cubic root of 3644264 is about 153.8874761308.

The spelling of 3644264 in words is "three million, six hundred forty-four thousand, two hundred sixty-four".