224709 has 4 divisors (see below), whose sum is σ = 299616. Its totient is φ = 149804.

The previous prime is 224699. The next prime is 224711. The reversal of 224709 is 907422.

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.

It is a cyclic number.

It is not a de Polignac number, because 224709 - 2⁵ = 224677 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224729) 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, 37449 + ... + 37454.

It is an arithmetic number, because the mean of its divisors is an integer number (74904).

2²²⁴⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

224709 is a deficient number, since it is larger than the sum of its proper divisors (74907).

224709 is an equidigital number, since it uses as much as digits as its factorization.

224709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74906.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 224709 is about 474.0348088485. The cubic root of 224709 is about 60.7957875948.

The spelling of 224709 in words is "two hundred twenty-four thousand, seven hundred nine".