64423 has 4 divisors (see below), whose sum is σ = 67248. Its totient is φ = 61600.

The previous prime is 64403. The next prime is 64433. The reversal of 64423 is 32446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32446 = 2 ⋅16223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64423 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 64423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64403) 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, 1378 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (16812).

2⁶⁴⁴²³ is an apocalyptic number.

64423 is a deficient number, since it is larger than the sum of its proper divisors (2825).

64423 is a wasteful number, since it uses less digits than its factorization.

64423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824.

The product of its digits is 576, while the sum is 19.

The square root of 64423 is about 253.8168631120. The cubic root of 64423 is about 40.0879315594.

Adding to 64423 its reverse (32446), we get a palindrome (96869).

It can be divided in two parts, 64 and 423, that multiplied together give a palindrome (27072).

The spelling of 64423 in words is "sixty-four thousand, four hundred twenty-three".