624422 has 4 divisors (see below), whose sum is σ = 936636. Its totient is φ = 312210.

The previous prime is 624419. The next prime is 624443. The reversal of 624422 is 224426.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224426 = 2 ⋅112213.

It is a junction number, because it is equal to n+sod(n) for n = 624394 and 624403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156104 + ... + 156107.

It is an arithmetic number, because the mean of its divisors is an integer number (234159).

2⁶²⁴⁴²² is an apocalyptic number.

624422 is a deficient number, since it is larger than the sum of its proper divisors (312214).

624422 is a wasteful number, since it uses less digits than its factorization.

624422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312213.

The product of its digits is 768, while the sum is 20.

The square root of 624422 is about 790.2037711882. The cubic root of 624422 is about 85.4724327756.

Adding to 624422 its reverse (224426), we get a palindrome (848848).

The spelling of 624422 in words is "six hundred twenty-four thousand, four hundred twenty-two".