3220067644 has 12 divisors (see below), whose sum is σ = 5637253104. Its totient is φ = 1609423904.

The previous prime is 3220067633. The next prime is 3220067647. The reversal of 3220067644 is 4467600223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220067647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140497 + ... + 161800.

It is an arithmetic number, because the mean of its divisors is an integer number (469771092).

Almost surely, 2^3220067644 is an apocalyptic number.

It is an amenable number.

3220067644 is a deficient number, since it is larger than the sum of its proper divisors (2417185460).

3220067644 is a wasteful number, since it uses less digits than its factorization.

3220067644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304964 (or 304962 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 3220067644 is about 56745.6398677467. The cubic root of 3220067644 is about 1476.6865922630.

Adding to 3220067644 its reverse (4467600223), we get a palindrome (7687667867).

The spelling of 3220067644 in words is "three billion, two hundred twenty million, sixty-seven thousand, six hundred forty-four".