3216564080 has 20 divisors (see below), whose sum is σ = 7478511672. Its totient is φ = 1286625600.

The previous prime is 3216564059. The next prime is 3216564083. The reversal of 3216564080 is 804656123.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 3216564080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216564083) 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, 20103446 + ... + 20103605.

Almost surely, 2^3216564080 is an apocalyptic number.

It is an amenable number.

3216564080 is an abundant number, since it is smaller than the sum of its proper divisors (4261947592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3216564080 is a wasteful number, since it uses less digits than its factorization.

3216564080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40207064 (or 40207058 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 3216564080 is about 56714.7606889071. The cubic root of 3216564080 is about 1476.1508329687.

The spelling of 3216564080 in words is "three billion, two hundred sixteen million, five hundred sixty-four thousand, eighty".