8521683547 has 12 divisors (see below), whose sum is σ = 9312299040. Its totient is φ = 7793985888.

The previous prime is 8521683503. The next prime is 8521683557. The reversal of 8521683547 is 7453861258.

It is a happy number.

8521683547 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8521683547 - 2²³ = 8513294939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8521683547.

It is not an unprimeable number, because it can be changed into a prime (8521683557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212883 + ... + 249724.

It is an arithmetic number, because the mean of its divisors is an integer number (776024920).

Almost surely, 2^8521683547 is an apocalyptic number.

8521683547 is a deficient number, since it is larger than the sum of its proper divisors (790615493).

8521683547 is a wasteful number, since it uses less digits than its factorization.

8521683547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462742 (or 462729 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The square root of 8521683547 is about 92312.9652161602. The cubic root of 8521683547 is about 2042.5614648412.

The spelling of 8521683547 in words is "eight billion, five hundred twenty-one million, six hundred eighty-three thousand, five hundred forty-seven".