668214 has 12 divisors (see below), whose sum is σ = 1447836. Its totient is φ = 222732.

The previous prime is 668209. The next prime is 668221. The reversal of 668214 is 412866.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668214.

It is an unprimeable number.

668214 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 5 ways as a sum of consecutive naturals, for example, 18544 + ... + 18579.

It is an arithmetic number, because the mean of its divisors is an integer number (120653).

2⁶⁶⁸²¹⁴ is an apocalyptic number.

668214 is an abundant number, since it is smaller than the sum of its proper divisors (779622).

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

668214 is a wasteful number, since it uses less digits than its factorization.

668214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37131 (or 37128 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 668214 is about 817.4435760345. The cubic root of 668214 is about 87.4255802605.

The spelling of 668214 in words is "six hundred sixty-eight thousand, two hundred fourteen".