266243243 has 8 divisors (see below), whose sum is σ = 304562688. Its totient is φ = 227994984.

The previous prime is 266243227. The next prime is 266243251. The reversal of 266243243 is 342342662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266243243 - 2⁴ = 266243227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266243213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9521 + ... + 24962.

It is an arithmetic number, because the mean of its divisors is an integer number (38070336).

Almost surely, 2^266243243 is an apocalyptic number.

266243243 is a deficient number, since it is larger than the sum of its proper divisors (38319445).

266243243 is a wasteful number, since it uses less digits than its factorization.

266243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35593.

The product of its digits is 41472, while the sum is 32.

The square root of 266243243 is about 16316.9618189171. The cubic root of 266243243 is about 643.3187333856.

The spelling of 266243243 in words is "two hundred sixty-six million, two hundred forty-three thousand, two hundred forty-three".