624443 has 2 divisors, whose sum is σ = 624444. Its totient is φ = 624442.

The previous prime is 624419. The next prime is 624451. The reversal of 624443 is 344426.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-624443 is a prime.

It is not a weakly prime, because it can be changed into another prime (624643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312221 + 312222.

It is an arithmetic number, because the mean of its divisors is an integer number (312222).

2⁶²⁴⁴⁴³ is an apocalyptic number.

624443 is a deficient number, since it is larger than the sum of its proper divisors (1).

624443 is an equidigital number, since it uses as much as digits as its factorization.

624443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 23.

The square root of 624443 is about 790.2170587883. The cubic root of 624443 is about 85.4733909422.

Adding to 624443 its reverse (344426), we get a palindrome (968869).

The spelling of 624443 in words is "six hundred twenty-four thousand, four hundred forty-three".