8640323 has 4 divisors (see below), whose sum is σ = 8646528. Its totient is φ = 8634120.

The previous prime is 8640287. The next prime is 8640329. The reversal of 8640323 is 3230468.

8640323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8640323 - 2⁶ = 8640259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8640292 and 8640301.

It is not an unprimeable number, because it can be changed into a prime (8640329) 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, 65 + ... + 4157.

It is an arithmetic number, because the mean of its divisors is an integer number (2161632).

Almost surely, 2^8640323 is an apocalyptic number.

8640323 is a deficient number, since it is larger than the sum of its proper divisors (6205).

8640323 is a wasteful number, since it uses less digits than its factorization.

8640323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 8640323 is about 2939.4426342421. The cubic root of 8640323 is about 205.1996706167.

The spelling of 8640323 in words is "eight million, six hundred forty thousand, three hundred twenty-three".