624423 has 4 divisors (see below), whose sum is σ = 832568. Its totient is φ = 416280.

The previous prime is 624419. The next prime is 624443. The reversal of 624423 is 324426.

624423 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 not a de Polignac number, because 624423 - 2² = 624419 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 2¹⁵ + 4 + 4⁵ + 2¹⁹ + 3⁹ .

It is a D-number.

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 624423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624443) 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, 104068 + ... + 104073.

It is an arithmetic number, because the mean of its divisors is an integer number (208142).

2⁶²⁴⁴²³ is an apocalyptic number.

624423 is a deficient number, since it is larger than the sum of its proper divisors (208145).

624423 is a wasteful number, since it uses less digits than its factorization.

624423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208144.

The product of its digits is 1152, while the sum is 21.

The square root of 624423 is about 790.2044039361. The cubic root of 624423 is about 85.4724784031.

Adding to 624423 its reverse (324426), we get a palindrome (948849).

The spelling of 624423 in words is "six hundred twenty-four thousand, four hundred twenty-three".