266806233 has 12 divisors (see below), whose sum is σ = 402143040. Its totient is φ = 170137176.

The previous prime is 266806231. The next prime is 266806237. The reversal of 266806233 is 332608662.

266806233 is a `hidden beast` number, since 26 + 6 + 8 + 0 + 623 + 3 = 666.

It is not a de Polignac number, because 266806233 - 2¹ = 266806231 is a prime.

266806233 is a modest number, since divided by 6233 gives 2668 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (266806231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644253 + ... + 644666.

It is an arithmetic number, because the mean of its divisors is an integer number (33511920).

Almost surely, 2^266806233 is an apocalyptic number.

266806233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

266806233 is a deficient number, since it is larger than the sum of its proper divisors (135336807).

266806233 is a wasteful number, since it uses less digits than its factorization.

266806233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288948 (or 1288945 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 266806233 is about 16334.2043883380. The cubic root of 266806233 is about 643.7718616637.

The spelling of 266806233 in words is "two hundred sixty-six million, eight hundred six thousand, two hundred thirty-three".