3644864 has 14 divisors (see below), whose sum is σ = 7232904. Its totient is φ = 1822400.

The previous prime is 3644831. The next prime is 3644873. The reversal of 3644864 is 4684463.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28412 + ... + 28539.

It is an arithmetic number, because the mean of its divisors is an integer number (516636).

Almost surely, 2^3644864 is an apocalyptic number.

It is an amenable number.

3644864 is a deficient number, since it is larger than the sum of its proper divisors (3588040).

3644864 is an equidigital number, since it uses as much as digits as its factorization.

3644864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56963 (or 56953 counting only the distinct ones).

The product of its digits is 55296, while the sum is 35.

The square root of 3644864 is about 1909.1526916410. The cubic root of 3644864 is about 153.8959211299.

The spelling of 3644864 in words is "three million, six hundred forty-four thousand, eight hundred sixty-four".