224865805 has 4 divisors (see below), whose sum is σ = 269838972. Its totient is φ = 179892640.

The previous prime is 224865799. The next prime is 224865827. The reversal of 224865805 is 508568422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508568422 = 2 ⋅254284211.

It can be written as a sum of positive squares in 2 ways, for example, as 100922116 + 123943689 = 10046^2 + 11133^2 .

It is not a de Polignac number, because 224865805 - 2⁷ = 224865677 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22486576 + ... + 22486585.

It is an arithmetic number, because the mean of its divisors is an integer number (67459743).

Almost surely, 2^224865805 is an apocalyptic number.

It is an amenable number.

224865805 is a deficient number, since it is larger than the sum of its proper divisors (44973167).

224865805 is an equidigital number, since it uses as much as digits as its factorization.

224865805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44973166.

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 224865805 is about 14995.5261661604. The cubic root of 224865805 is about 608.0992568288.

The spelling of 224865805 in words is "two hundred twenty-four million, eight hundred sixty-five thousand, eight hundred five".