3217145808 has 20 divisors (see below), whose sum is σ = 8310960128. Its totient is φ = 1072381920.

The previous prime is 3217145783. The next prime is 3217145809. The reversal of 3217145808 is 8085417123.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3217145809) 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, 33511888 + ... + 33511983.

Almost surely, 2^3217145808 is an apocalyptic number.

It is an amenable number.

3217145808 is an abundant number, since it is smaller than the sum of its proper divisors (5093814320).

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

3217145808 is a wasteful number, since it uses less digits than its factorization.

3217145808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67023882 (or 67023876 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 3217145808 is about 56719.8889984809. Note that the first 3 decimals coincide. The cubic root of 3217145808 is about 1476.2398167920.

The spelling of 3217145808 in words is "three billion, two hundred seventeen million, one hundred forty-five thousand, eight hundred eight".