216897 has 8 divisors (see below), whose sum is σ = 291456. Its totient is φ = 143472.

The previous prime is 216877. The next prime is 216899. The reversal of 216897 is 798612.

216897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 216897 - 2⁸ = 216641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (36432).

2²¹⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

216897 is a deficient number, since it is larger than the sum of its proper divisors (74559).

216897 is a wasteful number, since it uses less digits than its factorization.

216897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 6048, while the sum is 33.

The square root of 216897 is about 465.7220200935. The cubic root of 216897 is about 60.0829408496.

The spelling of 216897 in words is "two hundred sixteen thousand, eight hundred ninety-seven".