216696 has 16 divisors (see below), whose sum is σ = 541800. Its totient is φ = 72224.

The previous prime is 216679. The next prime is 216703. The reversal of 216696 is 696612.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216696.

It is an unprimeable number.

216696 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4491 + ... + 4538.

2²¹⁶⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

216696 is an abundant number, since it is smaller than the sum of its proper divisors (325104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216696 is a wasteful number, since it uses less digits than its factorization.

216696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9038 (or 9034 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 216696 is about 465.5061761137. The cubic root of 216696 is about 60.0643753500.

It can be divided in two parts, 2166 and 96, that multiplied together give a square (207936 = 456²).

The spelling of 216696 in words is "two hundred sixteen thousand, six hundred ninety-six".