864423 has 12 divisors (see below), whose sum is σ = 1427088. Its totient is φ = 493920.

The previous prime is 864419. The next prime is 864427. The reversal of 864423 is 324468.

864423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (864419) and next prime (864427).

It is not a de Polignac number, because 864423 - 2² = 864419 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6798 + ... + 6923.

It is an arithmetic number, because the mean of its divisors is an integer number (118924).

2⁸⁶⁴⁴²³ is an apocalyptic number.

864423 is a deficient number, since it is larger than the sum of its proper divisors (562665).

864423 is a wasteful number, since it uses less digits than its factorization.

864423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13734 (or 13731 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 864423 is about 929.7435130185. The cubic root of 864423 is about 95.2596038842.

The spelling of 864423 in words is "eight hundred sixty-four thousand, four hundred twenty-three".