6464528172 has 36 divisors (see below), whose sum is σ = 16524504360. Its totient is φ = 2130629952.

The previous prime is 6464528153. The next prime is 6464528197. The reversal of 6464528172 is 2718254646.

6464528172 is a `hidden beast` number, since 64 + 64 + 528 + 1 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×6464528172³ (a number of 30 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005618 + ... + 1012025.

It is an arithmetic number, because the mean of its divisors is an integer number (459014010).

Almost surely, 2^6464528172 is an apocalyptic number.

It is an amenable number.

6464528172 is an abundant number, since it is smaller than the sum of its proper divisors (10059976188).

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

6464528172 is a wasteful number, since it uses less digits than its factorization.

6464528172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017742 (or 2017737 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 6464528172 is about 80402.2895942647. The cubic root of 6464528172 is about 1862.8545381676.

The spelling of 6464528172 in words is "six billion, four hundred sixty-four million, five hundred twenty-eight thousand, one hundred seventy-two".