216597027 has 18 divisors (see below), whose sum is σ = 300122212. Its totient is φ = 138942944.

The previous prime is 216597019. The next prime is 216597037. The reversal of 216597027 is 720795612.

It is not a de Polignac number, because 216597027 - 2³ = 216597019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216597037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 739093 + ... + 739385.

Almost surely, 2^216597027 is an apocalyptic number.

216597027 is a deficient number, since it is larger than the sum of its proper divisors (83525185).

216597027 is an frugal number, since it uses more digits than its factorization.

216597027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 216597027 is about 14717.2357119128. The cubic root of 216597027 is about 600.5522942402.

The spelling of 216597027 in words is "two hundred sixteen million, five hundred ninety-seven thousand, twenty-seven".