266133346 has 4 divisors (see below), whose sum is σ = 399200022. Its totient is φ = 133066672.

The previous prime is 266133331. The next prime is 266133349. The reversal of 266133346 is 643331662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643331662 = 2 ⋅321665831.

It can be written as a sum of positive squares in only one way, i.e., 232898121 + 33235225 = 15261^2 + 5765^2 .

It is not an unprimeable number, because it can be changed into a prime (266133349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66533335 + ... + 66533338.

Almost surely, 2^266133346 is an apocalyptic number.

266133346 is a deficient number, since it is larger than the sum of its proper divisors (133066676).

266133346 is a wasteful number, since it uses less digits than its factorization.

266133346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133066675.

The product of its digits is 46656, while the sum is 34.

The square root of 266133346 is about 16313.5939020193. The cubic root of 266133346 is about 643.2302071596.

The spelling of 266133346 in words is "two hundred sixty-six million, one hundred thirty-three thousand, three hundred forty-six".