266642445 has 16 divisors (see below), whose sum is σ = 426983040. Its totient is φ = 142090944.

The previous prime is 266642437. The next prime is 266642477. The reversal of 266642445 is 544246662.

266642445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266642445 - 2³ = 266642437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13047 + ... + 26523.

It is an arithmetic number, because the mean of its divisors is an integer number (26686440).

Almost surely, 2^266642445 is an apocalyptic number.

It is an amenable number.

266642445 is a deficient number, since it is larger than the sum of its proper divisors (160340595).

266642445 is a wasteful number, since it uses less digits than its factorization.

266642445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804.

The product of its digits is 276480, while the sum is 39.

The square root of 266642445 is about 16329.1899676622. The cubic root of 266642445 is about 643.6401010120.

The spelling of 266642445 in words is "two hundred sixty-six million, six hundred forty-two thousand, four hundred forty-five".