214689 has 4 divisors (see below), whose sum is σ = 286256. Its totient is φ = 143124.

The previous prime is 214673. The next prime is 214691. The reversal of 214689 is 986412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 214689 - 2⁴ = 214673 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214639) 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, 35779 + ... + 35784.

It is an arithmetic number, because the mean of its divisors is an integer number (71564).

2²¹⁴⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

214689 is a deficient number, since it is larger than the sum of its proper divisors (71567).

214689 is an equidigital number, since it uses as much as digits as its factorization.

214689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71566.

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

The square root of 214689 is about 463.3454434868. The cubic root of 214689 is about 59.8783646919.

It can be divided in two parts, 214 and 689, that added together give a triangular number (903 = T₄₂).

The spelling of 214689 in words is "two hundred fourteen thousand, six hundred eighty-nine".