266255869 has 8 divisors (see below), whose sum is σ = 299831040. Its totient is φ = 234242400.

The previous prime is 266255863. The next prime is 266255879. The reversal of 266255869 is 968552662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 266255869 - 2⁵ = 266255837 is a prime.

It is a super-2 number, since 2×266255869² = 141784375553890322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266255863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390064 + ... + 390745.

It is an arithmetic number, because the mean of its divisors is an integer number (37478880).

Almost surely, 2^266255869 is an apocalyptic number.

It is an amenable number.

266255869 is a deficient number, since it is larger than the sum of its proper divisors (33575171).

266255869 is a wasteful number, since it uses less digits than its factorization.

266255869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780851.

The product of its digits is 1555200, while the sum is 49.

The square root of 266255869 is about 16317.3487123368. The cubic root of 266255869 is about 643.3289025500.

The spelling of 266255869 in words is "two hundred sixty-six million, two hundred fifty-five thousand, eight hundred sixty-nine".