223785 has 12 divisors (see below), whose sum is σ = 387972. Its totient is φ = 119328.

The previous prime is 223781. The next prime is 223823. The reversal of 223785 is 587322.

223785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 110889 = 336^2 + 333^2 .

It is not a de Polignac number, because 223785 - 2² = 223781 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2¹³ + 7⁶ + 3⁹ + 8 + 5⁷ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2442 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (32331).

2²²³⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

223785 is a deficient number, since it is larger than the sum of its proper divisors (164187).

223785 is a wasteful number, since it uses less digits than its factorization.

223785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984 (or 4981 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 223785 is about 473.0591929135. The cubic root of 223785 is about 60.7123426631.

The spelling of 223785 in words is "two hundred twenty-three thousand, seven hundred eighty-five".