266036243 has 8 divisors (see below), whose sum is σ = 290375280. Its totient is φ = 241722880.

The previous prime is 266036237. The next prime is 266036257. The reversal of 266036243 is 342630662.

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

It is a cyclic number.

It is not a de Polignac number, because 266036243 - 2¹⁶ = 265970707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266036263) 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, 20003 + ... + 30531.

It is an arithmetic number, because the mean of its divisors is an integer number (36296910).

Almost surely, 2^266036243 is an apocalyptic number.

266036243 is a deficient number, since it is larger than the sum of its proper divisors (24339037).

266036243 is a wasteful number, since it uses less digits than its factorization.

266036243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12837.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 266036243 is about 16310.6174929093. The cubic root of 266036243 is about 643.1519667064.

The spelling of 266036243 in words is "two hundred sixty-six million, thirty-six thousand, two hundred forty-three".