224681 has 4 divisors (see below), whose sum is σ = 227472. Its totient is φ = 221892.

The previous prime is 224677. The next prime is 224683. The reversal of 224681 is 186422.

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 224681 - 2² = 224677 is a prime.

It is a super-2 number, since 2×224681² = 100963103522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (224683) 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, 1271 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (56868).

2²²⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

224681 is a deficient number, since it is larger than the sum of its proper divisors (2791).

224681 is an equidigital number, since it uses as much as digits as its factorization.

224681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790.

The product of its digits is 768, while the sum is 23.

The square root of 224681 is about 474.0052742323. The cubic root of 224681 is about 60.7932623247.

The spelling of 224681 in words is "two hundred twenty-four thousand, six hundred eighty-one".