8917691264 has 64 divisors (see below), whose sum is σ = 18186681600. Its totient is φ = 4353646080.

The previous prime is 8917691239. The next prime is 8917691297. The reversal of 8917691264 is 4621967198.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2952347 + ... + 2955365.

It is an arithmetic number, because the mean of its divisors is an integer number (284166900).

Almost surely, 2^8917691264 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 8917691264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9093340800).

8917691264 is an abundant number, since it is smaller than the sum of its proper divisors (9268990336).

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

8917691264 is a wasteful number, since it uses less digits than its factorization.

8917691264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571 (or 3559 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 8917691264 is about 94433.5282831262. The cubic root of 8917691264 is about 2073.7233169657.

The spelling of 8917691264 in words is "eight billion, nine hundred seventeen million, six hundred ninety-one thousand, two hundred sixty-four".