8506689984 has 140 divisors (see below), whose sum is σ = 27156439464. Its totient is φ = 2617422336.

The previous prime is 8506689949. The next prime is 8506689991. The reversal of 8506689984 is 4899866058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4279 + ... + 130505.

Almost surely, 2^8506689984 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 8506689984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13578219732).

8506689984 is an abundant number, since it is smaller than the sum of its proper divisors (18649749480).

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

8506689984 is a wasteful number, since it uses less digits than its factorization.

8506689984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126264 (or 126245 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The square root of 8506689984 is about 92231.7189691269. The cubic root of 8506689984 is about 2041.3628263824.

The spelling of 8506689984 in words is "eight billion, five hundred six million, six hundred eighty-nine thousand, nine hundred eighty-four".