216896 has 14 divisors (see below), whose sum is σ = 430530. Its totient is φ = 108416.

The previous prime is 216877. The next prime is 216899. The reversal of 216896 is 698612.

It can be written as a sum of positive squares in only one way, i.e., 215296 + 1600 = 464^2 + 40^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1631 + ... + 1758.

2²¹⁶⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

216896 is a deficient number, since it is larger than the sum of its proper divisors (213634).

216896 is an equidigital number, since it uses as much as digits as its factorization.

216896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401 (or 3391 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 216896 is about 465.7209464905. The cubic root of 216896 is about 60.0828485124.

The spelling of 216896 in words is "two hundred sixteen thousand, eight hundred ninety-six".