216898 has 8 divisors (see below), whose sum is σ = 354960. Its totient is φ = 98580.

The previous prime is 216877. The next prime is 216899. The reversal of 216898 is 898612.

216898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam 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 in 3 ways as a sum of consecutive naturals, for example, 4908 + ... + 4951.

It is an arithmetic number, because the mean of its divisors is an integer number (44370).

2²¹⁶⁸⁹⁸ is an apocalyptic number.

216898 is a deficient number, since it is larger than the sum of its proper divisors (138062).

216898 is a wasteful number, since it uses less digits than its factorization.

216898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9872.

The product of its digits is 6912, while the sum is 34.

The square root of 216898 is about 465.7230936941. The cubic root of 216898 is about 60.0830331866.

It can be divided in two parts, 2 and 16898, that added together give a square (16900 = 130²).

The spelling of 216898 in words is "two hundred sixteen thousand, eight hundred ninety-eight".