223693985 has 16 divisors (see below), whose sum is σ = 277696512. Its totient is φ = 172804800.

The previous prime is 223693979. The next prime is 223693997. The reversal of 223693985 is 589396322.

It is a happy number.

It is not a de Polignac number, because 223693985 - 2¹² = 223689889 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85040 + ... + 87630.

It is an arithmetic number, because the mean of its divisors is an integer number (17356032).

Almost surely, 2^223693985 is an apocalyptic number.

It is an amenable number.

223693985 is a deficient number, since it is larger than the sum of its proper divisors (54002527).

223693985 is a wasteful number, since it uses less digits than its factorization.

223693985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its digits is 699840, while the sum is 47.

The square root of 223693985 is about 14956.4028094993. The cubic root of 223693985 is about 607.0411082878.

The spelling of 223693985 in words is "two hundred twenty-three million, six hundred ninety-three thousand, nine hundred eighty-five".