266491471 has 8 divisors (see below), whose sum is σ = 271914624. Its totient is φ = 261114840.

The previous prime is 266491387. The next prime is 266491481. The reversal of 266491471 is 174194662.

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 266491471 - 2¹⁷ = 266360399 is a prime.

It is a super-3 number, since 3×266491471³ (a number of 26 digits) contains 333 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 (266491481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 23086.

It is an arithmetic number, because the mean of its divisors is an integer number (33989328).

Almost surely, 2^266491471 is an apocalyptic number.

266491471 is a deficient number, since it is larger than the sum of its proper divisors (5423153).

266491471 is a wasteful number, since it uses less digits than its factorization.

266491471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23261.

The product of its digits is 72576, while the sum is 40.

The square root of 266491471 is about 16324.5664873527. The cubic root of 266491471 is about 643.5186008931.

The spelling of 266491471 in words is "two hundred sixty-six million, four hundred ninety-one thousand, four hundred seventy-one".