3644036764 has 12 divisors (see below), whose sum is σ = 6381346104. Its totient is φ = 1820795024.

The previous prime is 3644036761. The next prime is 3644036831. The reversal of 3644036764 is 4676304463.

It is a self number, because there is not a number n which added to its sum of digits gives 3644036764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644036761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299122 + ... + 311065.

It is an arithmetic number, because the mean of its divisors is an integer number (531778842).

Almost surely, 2^3644036764 is an apocalyptic number.

It is an amenable number.

3644036764 is a deficient number, since it is larger than the sum of its proper divisors (2737309340).

3644036764 is a wasteful number, since it uses less digits than its factorization.

3644036764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611684 (or 611682 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 43.

The square root of 3644036764 is about 60365.8576017934. The cubic root of 3644036764 is about 1538.8427754245.

The spelling of 3644036764 in words is "three billion, six hundred forty-four million, thirty-six thousand, seven hundred sixty-four".