8640208023 has 4 divisors (see below), whose sum is σ = 11520277368. Its totient is φ = 5760138680.

The previous prime is 8640208019. The next prime is 8640208051. The reversal of 8640208023 is 3208020468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8640208023 - 2² = 8640208019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640208013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440034668 + ... + 1440034673.

It is an arithmetic number, because the mean of its divisors is an integer number (2880069342).

Almost surely, 2^8640208023 is an apocalyptic number.

8640208023 is a deficient number, since it is larger than the sum of its proper divisors (2880069345).

8640208023 is a wasteful number, since it uses less digits than its factorization.

8640208023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880069344.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 8640208023 is about 92952.7192878186. The cubic root of 8640208023 is about 2051.9876041357.

The spelling of 8640208023 in words is "eight billion, six hundred forty million, two hundred eight thousand, twenty-three".