624239 has 16 divisors (see below), whose sum is σ = 796416. Its totient is φ = 479160.

The previous prime is 624233. The next prime is 624241. The reversal of 624239 is 932426.

It is not a de Polignac number, because 624239 - 2⁸ = 623983 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624233) 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 in 15 ways as a sum of consecutive naturals, for example, 9284 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (49776).

2⁶²⁴²³⁹ is an apocalyptic number.

624239 is a deficient number, since it is larger than the sum of its proper divisors (172177).

624239 is an equidigital number, since it uses as much as digits as its factorization.

624239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 85 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 624239 is about 790.0879697856. The cubic root of 624239 is about 85.4640821284.

The spelling of 624239 in words is "six hundred twenty-four thousand, two hundred thirty-nine".