224665 has 16 divisors (see below), whose sum is σ = 316800. Its totient is φ = 152880.

The previous prime is 224633. The next prime is 224669. The reversal of 224665 is 566422.

It is not a de Polignac number, because 224665 - 2⁵ = 224633 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 2¹⁶ + 6⁶ + 4⁴ + 6⁶ + 5² .

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (224669) 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, 1650 + ... + 1780.

It is an arithmetic number, because the mean of its divisors is an integer number (19800).

2²²⁴⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

224665 is a deficient number, since it is larger than the sum of its proper divisors (92135).

224665 is an equidigital number, since it uses as much as digits as its factorization.

224665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 143 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 224665 is about 473.9883964824. The cubic root of 224665 is about 60.7918192190.

The spelling of 224665 in words is "two hundred twenty-four thousand, six hundred sixty-five".