216894 has 16 divisors (see below), whose sum is σ = 445968. Its totient is φ = 70272.

The previous prime is 216877. The next prime is 216899. The reversal of 216894 is 498612.

It is a congruent number.

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

216894 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 7 ways as a sum of consecutive naturals, for example, 267 + ... + 710.

It is an arithmetic number, because the mean of its divisors is an integer number (27873).

2²¹⁶⁸⁹⁴ is an apocalyptic number.

216894 is an abundant number, since it is smaller than the sum of its proper divisors (229074).

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

216894 is a wasteful number, since it uses less digits than its factorization.

216894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its digits is 3456, while the sum is 30.

The square root of 216894 is about 465.7187992770. The cubic root of 216894 is about 60.0826638370.

The spelling of 216894 in words is "two hundred sixteen thousand, eight hundred ninety-four".