266166165 has 8 divisors (see below), whose sum is σ = 425865888. Its totient is φ = 141955280.

The previous prime is 266166163. The next prime is 266166191. The reversal of 266166165 is 561661662.

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

It is not a de Polignac number, because 266166165 - 2¹ = 266166163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266166163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8872191 + ... + 8872220.

It is an arithmetic number, because the mean of its divisors is an integer number (53233236).

Almost surely, 2^266166165 is an apocalyptic number.

It is an amenable number.

266166165 is a deficient number, since it is larger than the sum of its proper divisors (159699723).

266166165 is a wasteful number, since it uses less digits than its factorization.

266166165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17744419.

The product of its digits is 77760, while the sum is 39.

The square root of 266166165 is about 16314.5997499173. The cubic root of 266166165 is about 643.2566466680.

The spelling of 266166165 in words is "two hundred sixty-six million, one hundred sixty-six thousand, one hundred sixty-five".