266650089 has 16 divisors (see below), whose sum is σ = 359497728. Its totient is φ = 175794192.

The previous prime is 266650081. The next prime is 266650091. The reversal of 266650089 is 980056662.

It is not a de Polignac number, because 266650089 - 2³ = 266650081 is a prime.

It is a super-2 number, since 2×266650089² = 142204539927415842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266650089.

It is not an unprimeable number, because it can be changed into a prime (266650081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138874 + ... + 140780.

It is an arithmetic number, because the mean of its divisors is an integer number (22468608).

Almost surely, 2^266650089 is an apocalyptic number.

It is an amenable number.

266650089 is a deficient number, since it is larger than the sum of its proper divisors (92847639).

266650089 is a wasteful number, since it uses less digits than its factorization.

266650089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 266650089 is about 16329.4240253599. The cubic root of 266650089 is about 643.6462514930.

The spelling of 266650089 in words is "two hundred sixty-six million, six hundred fifty thousand, eighty-nine".