8717332638 has 64 divisors (see below), whose sum is σ = 20507300352. Its totient is φ = 2418595200.

The previous prime is 8717332583. The next prime is 8717332651. The reversal of 8717332638 is 8362337178.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298488 + ... + 326388.

It is an arithmetic number, because the mean of its divisors is an integer number (320426568).

Almost surely, 2^8717332638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8717332638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10253650176).

8717332638 is an abundant number, since it is smaller than the sum of its proper divisors (11789967714).

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

8717332638 is a wasteful number, since it uses less digits than its factorization.

8717332638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28129.

The product of its digits is 1016064, while the sum is 48.

The square root of 8717332638 is about 93366.6569927402. The cubic root of 8717332638 is about 2058.0750420532.

The spelling of 8717332638 in words is "eight billion, seven hundred seventeen million, three hundred thirty-two thousand, six hundred thirty-eight".