866730223 has 2 divisors, whose sum is σ = 866730224. Its totient is φ = 866730222.

The previous prime is 866730203. The next prime is 866730259. The reversal of 866730223 is 322037668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866730223 - 2⁹ = 866729711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866730203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433365111 + 433365112.

It is an arithmetic number, because the mean of its divisors is an integer number (433365112).

Almost surely, 2^866730223 is an apocalyptic number.

866730223 is a deficient number, since it is larger than the sum of its proper divisors (1).

866730223 is an equidigital number, since it uses as much as digits as its factorization.

866730223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 866730223 is about 29440.2823186192. The cubic root of 866730223 is about 953.4428075200.

The spelling of 866730223 in words is "eight hundred sixty-six million, seven hundred thirty thousand, two hundred twenty-three".