266875633 has 4 divisors (see below), whose sum is σ = 269518068. Its totient is φ = 264233200.

The previous prime is 266875619. The next prime is 266875649. The reversal of 266875633 is 336578662.

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 259628769 + 7246864 = 16113^2 + 2692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266875633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266875613) 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, 1321066 + ... + 1321267.

It is an arithmetic number, because the mean of its divisors is an integer number (67379517).

Almost surely, 2^266875633 is an apocalyptic number.

It is an amenable number.

266875633 is a deficient number, since it is larger than the sum of its proper divisors (2642435).

266875633 is a wasteful number, since it uses less digits than its factorization.

266875633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642434.

The product of its digits is 1088640, while the sum is 46.

The square root of 266875633 is about 16336.3286267141. The cubic root of 266875633 is about 643.8276748201.

The spelling of 266875633 in words is "two hundred sixty-six million, eight hundred seventy-five thousand, six hundred thirty-three".