3217999680 has 168 divisors, whose sum is σ = 12649882752. Its totient is φ = 735538176.

The previous prime is 3217999679. The next prime is 3217999693. The reversal of 3217999680 is 869997123.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59652 + ... + 99971.

Almost surely, 2^3217999680 is an apocalyptic number.

3217999680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3217999680 is an abundant number, since it is smaller than the sum of its proper divisors (9431883072).

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

3217999680 is a wasteful number, since it uses less digits than its factorization.

3217999680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159653 (or 159640 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 3217999680 is about 56727.4155942257. The cubic root of 3217999680 is about 1476.3704096029.

The spelling of 3217999680 in words is "three billion, two hundred seventeen million, nine hundred ninety-nine thousand, six hundred eighty".