266628913 has 8 divisors (see below), whose sum is σ = 270643680. Its totient is φ = 262642560.

The previous prime is 266628907. The next prime is 266628931. The reversal of 266628913 is 319826662.

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 266628913 - 2²⁵ = 233074481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266628913.

It is not an unprimeable number, because it can be changed into a prime (266628953) 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, 12193 + ... + 26113.

It is an arithmetic number, because the mean of its divisors is an integer number (33830460).

Almost surely, 2^266628913 is an apocalyptic number.

It is an amenable number.

266628913 is a deficient number, since it is larger than the sum of its proper divisors (4014767).

266628913 is a wasteful number, since it uses less digits than its factorization.

266628913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14207.

The product of its digits is 186624, while the sum is 43.

The square root of 266628913 is about 16328.7756123967. The cubic root of 266628913 is about 643.6292126665.

The spelling of 266628913 in words is "two hundred sixty-six million, six hundred twenty-eight thousand, nine hundred thirteen".