4243685 has 4 divisors (see below), whose sum is σ = 5092428. Its totient is φ = 3394944.

The previous prime is 4243667. The next prime is 4243699. The reversal of 4243685 is 5863424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 743044 + 3500641 = 862^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243685 - 2⁸ = 4243429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424364 + ... + 424373.

It is an arithmetic number, because the mean of its divisors is an integer number (1273107).

Almost surely, 2^4243685 is an apocalyptic number.

It is an amenable number.

4243685 is a deficient number, since it is larger than the sum of its proper divisors (848743).

4243685 is an equidigital number, since it uses as much as digits as its factorization.

4243685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848742.

The product of its digits is 23040, while the sum is 32.

The square root of 4243685 is about 2060.0206309647. The cubic root of 4243685 is about 161.9003222611.

The spelling of 4243685 in words is "four million, two hundred forty-three thousand, six hundred eighty-five".