3644304221 has 8 divisors (see below), whose sum is σ = 3714409440. Its totient is φ = 3574248912.

The previous prime is 3644304211. The next prime is 3644304247. The reversal of 3644304221 is 1224034463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3644304221 - 2²⁶ = 3577195357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644304211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156770 + ... + 178508.

It is an arithmetic number, because the mean of its divisors is an integer number (464301180).

Almost surely, 2^3644304221 is an apocalyptic number.

It is an amenable number.

3644304221 is a deficient number, since it is larger than the sum of its proper divisors (70105219).

3644304221 is a wasteful number, since it uses less digits than its factorization.

3644304221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24955.

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

The square root of 3644304221 is about 60368.0728614058. The cubic root of 3644304221 is about 1538.8804227032.

Adding to 3644304221 its reverse (1224034463), we get a palindrome (4868338684).

The spelling of 3644304221 in words is "three billion, six hundred forty-four million, three hundred four thousand, two hundred twenty-one".