224165985 has 16 divisors (see below), whose sum is σ = 362988864. Its totient is φ = 118114112.

The previous prime is 224165951. The next prime is 224165989. The reversal of 224165985 is 589561422.

It is a cyclic number.

It is not a de Polignac number, because 224165985 - 2⁸ = 224165729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (224165989) 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, 88782 + ... + 91271.

It is an arithmetic number, because the mean of its divisors is an integer number (22686804).

Almost surely, 2^224165985 is an apocalyptic number.

It is an amenable number.

224165985 is a deficient number, since it is larger than the sum of its proper divisors (138822879).

224165985 is a wasteful number, since it uses less digits than its factorization.

224165985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180144.

The product of its digits is 172800, while the sum is 42.

The square root of 224165985 is about 14972.1736898822. The cubic root of 224165985 is about 607.4677657370.

The spelling of 224165985 in words is "two hundred twenty-four million, one hundred sixty-five thousand, nine hundred eighty-five".