3218320564 has 12 divisors (see below), whose sum is σ = 5645505600. Its totient is φ = 1605318968.

The previous prime is 3218320561. The next prime is 3218320571. The reversal of 3218320564 is 4650238123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3218320561) 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, 958444 + ... + 961795.

It is an arithmetic number, because the mean of its divisors is an integer number (470458800).

Almost surely, 2^3218320564 is an apocalyptic number.

It is an amenable number.

3218320564 is a deficient number, since it is larger than the sum of its proper divisors (2427185036).

3218320564 is a wasteful number, since it uses less digits than its factorization.

3218320564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920662 (or 1920660 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 3218320564 is about 56730.2438210872. The cubic root of 3218320564 is about 1476.4194802414.

Adding to 3218320564 its reverse (4650238123), we get a palindrome (7868558687).

The spelling of 3218320564 in words is "three billion, two hundred eighteen million, three hundred twenty thousand, five hundred sixty-four".