8686040832 has 504 divisors, whose sum is σ = 30473014880. Its totient is φ = 2418647040.

The previous prime is 8686040801. The next prime is 8686040833. The reversal of 8686040832 is 2380406868.

It is a happy number.

8686040832 is a `hidden beast` number, since 8 + 6 + 8 + 604 + 0 + 8 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8686040833) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 79688394 + ... + 79688502.

Almost surely, 2^8686040832 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 8686040832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15236507440).

8686040832 is an abundant number, since it is smaller than the sum of its proper divisors (21786974048).

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

8686040832 is an equidigital number, since it uses as much as digits as its factorization.

8686040832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 8686040832 is about 93198.9314960209. The cubic root of 8686040832 is about 2055.6095288188.

The spelling of 8686040832 in words is "eight billion, six hundred eighty-six million, forty thousand, eight hundred thirty-two".