265966433 has 4 divisors (see below), whose sum is σ = 266203140. Its totient is φ = 265729728.

The previous prime is 265966409. The next prime is 265966447. The reversal of 265966433 is 334669562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30558784 + 235407649 = 5528^2 + 15343^2 .

It is a cyclic number.

It is not a de Polignac number, because 265966433 - 2²⁶ = 198857569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265966403) 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, 116660 + ... + 118917.

It is an arithmetic number, because the mean of its divisors is an integer number (66550785).

Almost surely, 2^265966433 is an apocalyptic number.

It is an amenable number.

265966433 is a deficient number, since it is larger than the sum of its proper divisors (236707).

265966433 is a wasteful number, since it uses less digits than its factorization.

265966433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236706.

The product of its digits is 699840, while the sum is 44.

The square root of 265966433 is about 16308.4773354228. The cubic root of 265966433 is about 643.0957057422.

The spelling of 265966433 in words is "two hundred sixty-five million, nine hundred sixty-six thousand, four hundred thirty-three".