8665728552 has 96 divisors (see below), whose sum is σ = 25333308000. Its totient is φ = 2660231808.

The previous prime is 8665728517. The next prime is 8665728613. The reversal of 8665728552 is 2558275668.

8665728552 is a `hidden beast` number, since 8 + 6 + 65 + 7 + 28 + 552 = 666.

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, 404199 + ... + 425097.

It is an arithmetic number, because the mean of its divisors is an integer number (263888625).

Almost surely, 2^8665728552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8665728552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12666654000).

8665728552 is an abundant number, since it is smaller than the sum of its proper divisors (16667579448).

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

8665728552 is a wasteful number, since it uses less digits than its factorization.

8665728552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21367 (or 21360 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 54.

The square root of 8665728552 is about 93089.8950047748. The cubic root of 8665728552 is about 2054.0059326284.

The spelling of 8665728552 in words is "eight billion, six hundred sixty-five million, seven hundred twenty-eight thousand, five hundred fifty-two".