684214 has 4 divisors (see below), whose sum is σ = 1026324. Its totient is φ = 342106.

The previous prime is 684191. The next prime is 684217. The reversal of 684214 is 412486.

684214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684217) by changing a digit.

684214 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 as a sum of consecutive naturals, namely, 171052 + ... + 171055.

It is an arithmetic number, because the mean of its divisors is an integer number (256581).

2⁶⁸⁴²¹⁴ is an apocalyptic number.

684214 is a deficient number, since it is larger than the sum of its proper divisors (342110).

684214 is a wasteful number, since it uses less digits than its factorization.

684214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342109.

The product of its digits is 1536, while the sum is 25.

The square root of 684214 is about 827.1722916056. The cubic root of 684214 is about 88.1178689131.

It can be divided in two parts, 684 and 214, that added together give a palindrome (898).

The spelling of 684214 in words is "six hundred eighty-four thousand, two hundred fourteen".