8643385032 has 32 divisors (see below), whose sum is σ = 22305511680. Its totient is φ = 2788188480.

The previous prime is 8643385031. The next prime is 8643385033. The reversal of 8643385032 is 2305833468.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8643385031) and next prime (8643385033).

It is a super-2 number, since 2×8643385032² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8643385031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5807983 + ... + 5809470.

It is an arithmetic number, because the mean of its divisors is an integer number (697047240).

Almost surely, 2^8643385032 is an apocalyptic number.

It is an amenable number.

8643385032 is an abundant number, since it is smaller than the sum of its proper divisors (13662126648).

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

8643385032 is a wasteful number, since it uses less digits than its factorization.

8643385032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11617493 (or 11617489 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 8643385032 is about 92969.8070988641. The cubic root of 8643385032 is about 2052.2390789535.

The spelling of 8643385032 in words is "eight billion, six hundred forty-three million, three hundred eighty-five thousand, thirty-two".