243045685 has 16 divisors (see below), whose sum is σ = 311708736. Its totient is φ = 181282048.

The previous prime is 243045683. The next prime is 243045697. The reversal of 243045685 is 586540342.

It is a cyclic number.

It is not a de Polignac number, because 243045685 - 2¹ = 243045683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243045683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4267 + ... + 22456.

It is an arithmetic number, because the mean of its divisors is an integer number (19481796).

Almost surely, 2^243045685 is an apocalyptic number.

It is an amenable number.

243045685 is a deficient number, since it is larger than the sum of its proper divisors (68663051).

243045685 is a wasteful number, since it uses less digits than its factorization.

243045685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26852.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 243045685 is about 15589.9225463118. The cubic root of 243045685 is about 624.0642508970.

The spelling of 243045685 in words is "two hundred forty-three million, forty-five thousand, six hundred eighty-five".