624493 has 4 divisors (see below), whose sum is σ = 626080. Its totient is φ = 622908.

The previous prime is 624487. The next prime is 624497. The reversal of 624493 is 394426.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-624493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624497) 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 3 ways as a sum of consecutive naturals, for example, 298 + ... + 1156.

It is an arithmetic number, because the mean of its divisors is an integer number (156520).

2⁶²⁴⁴⁹³ is an apocalyptic number.

It is an amenable number.

624493 is a deficient number, since it is larger than the sum of its proper divisors (1587).

624493 is an equidigital number, since it uses as much as digits as its factorization.

624493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its digits is 5184, while the sum is 28.

The square root of 624493 is about 790.2486950321. The cubic root of 624493 is about 85.4756722049.

The spelling of 624493 in words is "six hundred twenty-four thousand, four hundred ninety-three".