216791267 has 16 divisors (see below), whose sum is σ = 270611712. Its totient is φ = 168724320.

The previous prime is 216791257. The next prime is 216791279. The reversal of 216791267 is 762197612.

It is a cyclic number.

It is not a de Polignac number, because 216791267 - 2¹⁰ = 216790243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216791257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108893 + ... + 110865.

It is an arithmetic number, because the mean of its divisors is an integer number (16913232).

Almost surely, 2^216791267 is an apocalyptic number.

216791267 is a deficient number, since it is larger than the sum of its proper divisors (53820445).

216791267 is a wasteful number, since it uses less digits than its factorization.

216791267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418.

The product of its digits is 63504, while the sum is 41.

The square root of 216791267 is about 14723.8332984315. The cubic root of 216791267 is about 600.7317618079.

The spelling of 216791267 in words is "two hundred sixteen million, seven hundred ninety-one thousand, two hundred sixty-seven".