266448645 has 24 divisors (see below), whose sum is σ = 467040600. Its totient is φ = 140507136.

The previous prime is 266448617. The next prime is 266448653. The reversal of 266448645 is 546844662.

It can be written as a sum of positive squares in 4 ways, for example, as 28579716 + 237868929 = 5346^2 + 15423^2 .

It is not a de Polignac number, because 266448645 - 2⁷ = 266448517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 266448645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29260 + ... + 37269.

It is an arithmetic number, because the mean of its divisors is an integer number (19460025).

Almost surely, 2^266448645 is an apocalyptic number.

It is an amenable number.

266448645 is a deficient number, since it is larger than the sum of its proper divisors (200591955).

266448645 is a wasteful number, since it uses less digits than its factorization.

266448645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66629 (or 66626 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 266448645 is about 16323.2547305983. The cubic root of 266448645 is about 643.4841272395.

The spelling of 266448645 in words is "two hundred sixty-six million, four hundred forty-eight thousand, six hundred forty-five".