4243663 has 4 divisors (see below), whose sum is σ = 4255240. Its totient is φ = 4232088.

The previous prime is 4243649. The next prime is 4243667. The reversal of 4243663 is 3663424.

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

It is a cyclic number.

It is not a de Polignac number, because 4243663 - 2¹³ = 4235471 is a prime.

It is a Duffinian number.

4243663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220 + ... + 5977.

It is an arithmetic number, because the mean of its divisors is an integer number (1063810).

Almost surely, 2^4243663 is an apocalyptic number.

4243663 is a deficient number, since it is larger than the sum of its proper divisors (11577).

4243663 is a wasteful number, since it uses less digits than its factorization.

4243663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11576.

The product of its digits is 10368, while the sum is 28.

The square root of 4243663 is about 2060.0152912054. The cubic root of 4243663 is about 161.9000424875.

The spelling of 4243663 in words is "four million, two hundred forty-three thousand, six hundred sixty-three".