216862 has 8 divisors (see below), whose sum is σ = 336600. Its totient is φ = 104664.

The previous prime is 216859. The next prime is 216877. The reversal of 216862 is 268612.

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1812 + ... + 1927.

It is an arithmetic number, because the mean of its divisors is an integer number (42075).

2²¹⁶⁸⁶² is an apocalyptic number.

216862 is a deficient number, since it is larger than the sum of its proper divisors (119738).

216862 is a wasteful number, since it uses less digits than its factorization.

216862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770.

The product of its digits is 1152, while the sum is 25.

The square root of 216862 is about 465.6844425145. The cubic root of 216862 is about 60.0797088762.

The spelling of 216862 in words is "two hundred sixteen thousand, eight hundred sixty-two".