866220323 has 4 divisors (see below), whose sum is σ = 866328600. Its totient is φ = 866112048.

The previous prime is 866220269. The next prime is 866220347. The reversal of 866220323 is 323022668.

866220323 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.

It is a cyclic number.

It is not a de Polignac number, because 866220323 - 2¹⁸ = 865958179 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 866220323.

It is not an unprimeable number, because it can be changed into a prime (866226323) 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, 41090 + ... + 58487.

It is an arithmetic number, because the mean of its divisors is an integer number (216582150).

Almost surely, 2^866220323 is an apocalyptic number.

866220323 is a deficient number, since it is larger than the sum of its proper divisors (108277).

866220323 is an equidigital number, since it uses as much as digits as its factorization.

866220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108276.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 866220323 is about 29431.6211412148. The cubic root of 866220323 is about 953.2557997513.

The spelling of 866220323 in words is "eight hundred sixty-six million, two hundred twenty thousand, three hundred twenty-three".