243606 has 16 divisors (see below), whose sum is σ = 531648. Its totient is φ = 73800.

The previous prime is 243589. The next prime is 243613. The reversal of 243606 is 606342.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243606.

It is an unprimeable number.

243606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (33228).

2²⁴³⁶⁰⁶ is an apocalyptic number.

243606 is an abundant number, since it is smaller than the sum of its proper divisors (288042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243606 is a wasteful number, since it uses less digits than its factorization.

243606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243606 is about 493.5645854394. The cubic root of 243606 is about 62.4543453252.

Adding to 243606 its reverse (606342), we get a palindrome (849948).

The spelling of 243606 in words is "two hundred forty-three thousand, six hundred six".