266016505 has 8 divisors (see below), whose sum is σ = 333099072. Its totient is φ = 203560368.

The previous prime is 266016503. The next prime is 266016529. The reversal of 266016505 is 505610662.

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

It is a cyclic number.

It is not a de Polignac number, because 266016505 - 2¹ = 266016503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266016503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156479 + ... + 1156708.

It is an arithmetic number, because the mean of its divisors is an integer number (41637384).

Almost surely, 2^266016505 is an apocalyptic number.

It is an amenable number.

266016505 is a deficient number, since it is larger than the sum of its proper divisors (67082567).

266016505 is a wasteful number, since it uses less digits than its factorization.

266016505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313215.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 266016505 is about 16310.0124156912. The cubic root of 266016505 is about 643.1360605435.

The spelling of 266016505 in words is "two hundred sixty-six million, sixteen thousand, five hundred five".