266500216 has 32 divisors (see below), whose sum is σ = 513002880. Its totient is φ = 129744000.

The previous prime is 266500207. The next prime is 266500249. The reversal of 266500216 is 612005662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46585 + ... + 51991.

It is an arithmetic number, because the mean of its divisors is an integer number (16031340).

Almost surely, 2^266500216 is an apocalyptic number.

It is an amenable number.

266500216 is a deficient number, since it is larger than the sum of its proper divisors (246502664).

266500216 is a wasteful number, since it uses less digits than its factorization.

266500216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575 (or 5571 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 266500216 is about 16324.8343330032. The cubic root of 266500216 is about 643.5256399034.

Adding to 266500216 its reverse (612005662), we get a palindrome (878505878).

The spelling of 266500216 in words is "two hundred sixty-six million, five hundred thousand, two hundred sixteen".