266878105 has 8 divisors (see below), whose sum is σ = 344888712. Its totient is φ = 197079168.

The previous prime is 266878103. The next prime is 266878127. The reversal of 266878105 is 501878662.

It can be written as a sum of positive squares in 4 ways, for example, as 30702681 + 236175424 = 5541^2 + 15368^2 .

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

It is not a de Polignac number, because 266878105 - 2¹ = 266878103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266878103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052844 + ... + 2052973.

It is an arithmetic number, because the mean of its divisors is an integer number (43111089).

Almost surely, 2^266878105 is an apocalyptic number.

It is an amenable number.

266878105 is a deficient number, since it is larger than the sum of its proper divisors (78010607).

266878105 is a wasteful number, since it uses less digits than its factorization.

266878105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105835.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 266878105 is about 16336.4042861335. The cubic root of 266878105 is about 643.8296626837.

The spelling of 266878105 in words is "two hundred sixty-six million, eight hundred seventy-eight thousand, one hundred five".