216662 has 8 divisors (see below), whose sum is σ = 327936. Its totient is φ = 107352.

The previous prime is 216661. The next prime is 216679. The reversal of 216662 is 266612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (40992).

2²¹⁶⁶⁶² is an apocalyptic number.

216662 is a deficient number, since it is larger than the sum of its proper divisors (111274).

216662 is a wasteful number, since it uses less digits than its factorization.

216662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its digits is 864, while the sum is 23.

The square root of 216662 is about 465.4696552945. The cubic root of 216662 is about 60.0612337821.

It can be divided in two parts, 216 and 662, that added together give a palindrome (878).

The spelling of 216662 in words is "two hundred sixteen thousand, six hundred sixty-two".