8706209664 has 128 divisors (see below), whose sum is σ = 23469465600. Its totient is φ = 2859300864.

The previous prime is 8706209597. The next prime is 8706209747. The reversal of 8706209664 is 4669026078.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8143722 + ... + 8144790.

It is an arithmetic number, because the mean of its divisors is an integer number (183355200).

Almost surely, 2^8706209664 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 8706209664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11734732800).

8706209664 is an abundant number, since it is smaller than the sum of its proper divisors (14763255936).

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

8706209664 is a wasteful number, since it uses less digits than its factorization.

8706209664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 8706209664 is about 93307.0718863260. The cubic root of 8706209664 is about 2057.1993285203.

The spelling of 8706209664 in words is "eight billion, seven hundred six million, two hundred nine thousand, six hundred sixty-four".