3644704 has 48 divisors (see below), whose sum is σ = 8382528. Its totient is φ = 1527552.

The previous prime is 3644699. The next prime is 3644731. The reversal of 3644704 is 4074463.

3644704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11719 + ... + 12025.

It is an arithmetic number, because the mean of its divisors is an integer number (174636).

Almost surely, 2^3644704 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 3644704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4191264).

3644704 is an abundant number, since it is smaller than the sum of its proper divisors (4737824).

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

3644704 is a wasteful number, since it uses less digits than its factorization.

3644704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 3644704 is about 1909.1107877753. The cubic root of 3644704 is about 153.8936692208.

The spelling of 3644704 in words is "three million, six hundred forty-four thousand, seven hundred four".