666714 has 8 divisors (see below), whose sum is σ = 1333440. Its totient is φ = 222236.

The previous prime is 666707. The next prime is 666727. The reversal of 666714 is 417666.

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

666714 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

666714 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 3 ways as a sum of consecutive naturals, for example, 55554 + ... + 55565.

It is an arithmetic number, because the mean of its divisors is an integer number (166680).

2⁶⁶⁶⁷¹⁴ is an apocalyptic number.

666714 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

666714 is a wasteful number, since it uses less digits than its factorization.

666714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111124.

The product of its digits is 6048, while the sum is 30.

The square root of 666714 is about 816.5255660419. The cubic root of 666714 is about 87.3601138985.

The spelling of 666714 in words is "six hundred sixty-six thousand, seven hundred fourteen".