8243558064 has 120 divisors (see below), whose sum is σ = 27512739072. Its totient is φ = 2252891520.

The previous prime is 8243558053. The next prime is 8243558083. The reversal of 8243558064 is 4608553428.

8243558064 is a `hidden beast` number, since 8 + 2 + 4 + 3 + 5 + 580 + 64 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154602 + ... + 200969.

Almost surely, 2^8243558064 is an apocalyptic number.

8243558064 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

8243558064 is an abundant number, since it is smaller than the sum of its proper divisors (19269181008).

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

8243558064 is a wasteful number, since it uses less digits than its factorization.

8243558064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355615 (or 355606 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The square root of 8243558064 is about 90794.0420071714. The cubic root of 8243558064 is about 2020.0939458970.

The spelling of 8243558064 in words is "eight billion, two hundred forty-three million, five hundred fifty-eight thousand, sixty-four".