266080685 has 16 divisors (see below), whose sum is σ = 364086576. Its totient is φ = 184931328.

The previous prime is 266080649. The next prime is 266080697. The reversal of 266080685 is 586080662.

It can be written as a sum of positive squares in 8 ways, for example, as 11710084 + 254370601 = 3422^2 + 15949^2 .

It is a cyclic number.

It is not a de Polignac number, because 266080685 - 2⁸ = 266080429 is a prime.

It is a Duffinian number.

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, 119294 + ... + 121503.

It is an arithmetic number, because the mean of its divisors is an integer number (22755411).

Almost surely, 2^266080685 is an apocalyptic number.

It is an amenable number.

266080685 is a deficient number, since it is larger than the sum of its proper divisors (98005891).

266080685 is a wasteful number, since it uses less digits than its factorization.

266080685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240832.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 266080685 is about 16311.9798001346. The cubic root of 266080685 is about 643.1877780780.

The spelling of 266080685 in words is "two hundred sixty-six million, eighty thousand, six hundred eighty-five".