864620223 has 4 divisors (see below), whose sum is σ = 1152826968. Its totient is φ = 576413480.

The previous prime is 864620219. The next prime is 864620227. The reversal of 864620223 is 322026468.

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

It is an interprime number because it is at equal distance from previous prime (864620219) and next prime (864620227).

It is a cyclic number.

It is not a de Polignac number, because 864620223 - 2² = 864620219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864620227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144103368 + ... + 144103373.

It is an arithmetic number, because the mean of its divisors is an integer number (288206742).

Almost surely, 2^864620223 is an apocalyptic number.

864620223 is a deficient number, since it is larger than the sum of its proper divisors (288206745).

864620223 is a wasteful number, since it uses less digits than its factorization.

864620223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288206744.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 864620223 is about 29404.4252281863. The cubic root of 864620223 is about 952.6684800586.

The spelling of 864620223 in words is "eight hundred sixty-four million, six hundred twenty thousand, two hundred twenty-three".