266645233 has 4 divisors (see below), whose sum is σ = 278238528. Its totient is φ = 255051940.

The previous prime is 266645231. The next prime is 266645237. The reversal of 266645233 is 332546662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266645233 - 2¹ = 266645231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266645192 and 266645201.

It is not an unprimeable number, because it can be changed into a prime (266645231) 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, 5796613 + ... + 5796658.

It is an arithmetic number, because the mean of its divisors is an integer number (69559632).

Almost surely, 2^266645233 is an apocalyptic number.

266645233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

266645233 is a deficient number, since it is larger than the sum of its proper divisors (11593295).

266645233 is a wasteful number, since it uses less digits than its factorization.

266645233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11593294.

The product of its digits is 155520, while the sum is 37.

The square root of 266645233 is about 16329.2753360337. The cubic root of 266645233 is about 643.6423442937.

The spelling of 266645233 in words is "two hundred sixty-six million, six hundred forty-five thousand, two hundred thirty-three".