266485878 has 48 divisors (see below), whose sum is σ = 595685376. Its totient is φ = 86047920.

The previous prime is 266485873. The next prime is 266485883. The reversal of 266485878 is 878584662.

266485878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (266485873) and next prime (266485883).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266485873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96943 + ... + 99653.

It is an arithmetic number, because the mean of its divisors is an integer number (12410112).

Almost surely, 2^266485878 is an apocalyptic number.

266485878 is an abundant number, since it is smaller than the sum of its proper divisors (329199498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266485878 is a wasteful number, since it uses less digits than its factorization.

266485878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2886 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 266485878 is about 16324.3951802203. The cubic root of 266485878 is about 643.5140989045.

The spelling of 266485878 in words is "two hundred sixty-six million, four hundred eighty-five thousand, eight hundred seventy-eight".