266141661 has 8 divisors (see below), whose sum is σ = 354943680. Its totient is φ = 177383712.

The previous prime is 266141653. The next prime is 266141669. The reversal of 266141661 is 166141662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266141653) and next prime (266141669).

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

It is not a de Polignac number, because 266141661 - 2³ = 266141653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266141669) 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, 7545 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (44367960).

Almost surely, 2^266141661 is an apocalyptic number.

It is an amenable number.

266141661 is a deficient number, since it is larger than the sum of its proper divisors (88802019).

266141661 is a wasteful number, since it uses less digits than its factorization.

266141661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22035.

The product of its digits is 10368, while the sum is 33.

The square root of 266141661 is about 16313.8487488391. The cubic root of 266141661 is about 643.2369060614.

Subtracting from 266141661 its reverse (166141662), we obtain a palindrome (99999999).

The spelling of 266141661 in words is "two hundred sixty-six million, one hundred forty-one thousand, six hundred sixty-one".