266168089 has 4 divisors (see below), whose sum is σ = 290365200. Its totient is φ = 241970980.

The previous prime is 266168083. The next prime is 266168101. The reversal of 266168089 is 980861662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266168089 - 2¹⁷ = 266037017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266168083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12098539 + ... + 12098560.

It is an arithmetic number, because the mean of its divisors is an integer number (72591300).

Almost surely, 2^266168089 is an apocalyptic number.

It is an amenable number.

266168089 is a deficient number, since it is larger than the sum of its proper divisors (24197111).

266168089 is a wasteful number, since it uses less digits than its factorization.

266168089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24197110.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 266168089 is about 16314.6587154007. The cubic root of 266168089 is about 643.2581966055.

The spelling of 266168089 in words is "two hundred sixty-six million, one hundred sixty-eight thousand, eighty-nine".