266505006 has 32 divisors (see below), whose sum is σ = 556721280. Its totient is φ = 84964896.

The previous prime is 266504989. The next prime is 266505053. The reversal of 266505006 is 600505662.

It is a Curzon 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, 2925 + ... + 23271.

It is an arithmetic number, because the mean of its divisors is an integer number (17397540).

Almost surely, 2^266505006 is an apocalyptic number.

266505006 is an abundant number, since it is smaller than the sum of its proper divisors (290216274).

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

266505006 is a wasteful number, since it uses less digits than its factorization.

266505006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 266505006 is about 16324.9810413366. The cubic root of 266505006 is about 643.5294953966.

The spelling of 266505006 in words is "two hundred sixty-six million, five hundred five thousand, six".