224705985 has 16 divisors (see below), whose sum is σ = 410891136. Its totient is φ = 102722688.

The previous prime is 224705977. The next prime is 224706023. The reversal of 224705985 is 589507422.

It is not a de Polignac number, because 224705985 - 2³ = 224705977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069924 + ... + 1070133.

It is an arithmetic number, because the mean of its divisors is an integer number (25680696).

Almost surely, 2^224705985 is an apocalyptic number.

It is an amenable number.

224705985 is a deficient number, since it is larger than the sum of its proper divisors (186185151).

224705985 is a wasteful number, since it uses less digits than its factorization.

224705985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140072.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 224705985 is about 14990.1962962464. The cubic root of 224705985 is about 607.9551568742.

The spelling of 224705985 in words is "two hundred twenty-four million, seven hundred five thousand, nine hundred eighty-five".