224690 has 8 divisors (see below), whose sum is σ = 404460. Its totient is φ = 89872.

The previous prime is 224683. The next prime is 224699. The reversal of 224690 is 96422.

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 961 = 473^2 + 31^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×224690² = 100971192200, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (224699) by changing a digit.

224690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 11225 + ... + 11244.

2²²⁴⁶⁹⁰ is an apocalyptic number.

224690 is a deficient number, since it is larger than the sum of its proper divisors (179770).

224690 is a wasteful number, since it uses less digits than its factorization.

224690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22476.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 224690 is about 474.0147677024. The cubic root of 224690 is about 60.7940740416.

The spelling of 224690 in words is "two hundred twenty-four thousand, six hundred ninety".