666914 has 4 divisors (see below), whose sum is σ = 1000374. Its totient is φ = 333456.

The previous prime is 666901. The next prime is 666929. The reversal of 666914 is 419666.

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

It can be written as a sum of positive squares in only one way, i.e., 380689 + 286225 = 617^2 + 535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166727 + ... + 166730.

2⁶⁶⁶⁹¹⁴ is an apocalyptic number.

666914 is a deficient number, since it is larger than the sum of its proper divisors (333460).

666914 is a wasteful number, since it uses less digits than its factorization.

666914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333459.

The product of its digits is 7776, while the sum is 32.

The square root of 666914 is about 816.6480269982. The cubic root of 666914 is about 87.3688484163.

The spelling of 666914 in words is "six hundred sixty-six thousand, nine hundred fourteen".