3645784 has 16 divisors (see below), whose sum is σ = 6860520. Its totient is φ = 1816320.

The previous prime is 3645781. The next prime is 3645791. The reversal of 3645784 is 4875463.

3645784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645781) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2179 + ... + 3469.

Almost surely, 2^3645784 is an apocalyptic number.

It is an amenable number.

3645784 is a deficient number, since it is larger than the sum of its proper divisors (3214736).

3645784 is a wasteful number, since it uses less digits than its factorization.

3645784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1646 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 3645784 is about 1909.3936210221. The cubic root of 3645784 is about 153.9088683288.

The spelling of 3645784 in words is "three million, six hundred forty-five thousand, seven hundred eighty-four".