8318997684 has 72 divisors (see below), whose sum is σ = 21742552832. Its totient is φ = 2679143040.

The previous prime is 8318997649. The next prime is 8318997721. The reversal of 8318997684 is 4867998138.

It is a congruent number.

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, 711792 + ... + 723384.

Almost surely, 2^8318997684 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 8318997684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10871276416).

8318997684 is an abundant number, since it is smaller than the sum of its proper divisors (13423555148).

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

8318997684 is a wasteful number, since it uses less digits than its factorization.

8318997684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277 (or 12272 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 8318997684 is about 91208.5395344098. The cubic root of 8318997684 is about 2026.2374337090.

The spelling of 8318997684 in words is "eight billion, three hundred eighteen million, nine hundred ninety-seven thousand, six hundred eighty-four".