624839 has 2 divisors, whose sum is σ = 624840. Its totient is φ = 624838.

The previous prime is 624829. The next prime is 624847. The reversal of 624839 is 938426.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 624839 - 2¹² = 620743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312419 + 312420.

It is an arithmetic number, because the mean of its divisors is an integer number (312420).

2⁶²⁴⁸³⁹ is an apocalyptic number.

624839 is a deficient number, since it is larger than the sum of its proper divisors (1).

624839 is an equidigital number, since it uses as much as digits as its factorization.

624839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 624839 is about 790.4675831430. The cubic root of 624839 is about 85.4914552066.

The spelling of 624839 in words is "six hundred twenty-four thousand, eight hundred thirty-nine".