8705165172 has 96 divisors (see below), whose sum is σ = 23352537600. Its totient is φ = 2496124800.

The previous prime is 8705165167. The next prime is 8705165173. The reversal of 8705165172 is 2715615078.

8705165172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8705165173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2960479 + ... + 2963417.

It is an arithmetic number, because the mean of its divisors is an integer number (243255600).

Almost surely, 2^8705165172 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 8705165172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11676268800).

8705165172 is an abundant number, since it is smaller than the sum of its proper divisors (14647372428).

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

8705165172 is a wasteful number, since it uses less digits than its factorization.

8705165172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 42.

The square root of 8705165172 is about 93301.4746507256. The cubic root of 8705165172 is about 2057.1170571968.

The spelling of 8705165172 in words is "eight billion, seven hundred five million, one hundred sixty-five thousand, one hundred seventy-two".