667714 has 4 divisors (see below), whose sum is σ = 1001574. Its totient is φ = 333856.

The previous prime is 667699. The next prime is 667727. The reversal of 667714 is 417766.

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., 667489 + 225 = 817^2 + 15^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166927 + ... + 166930.

2⁶⁶⁷⁷¹⁴ is an apocalyptic number.

667714 is a deficient number, since it is larger than the sum of its proper divisors (333860).

667714 is a wasteful number, since it uses less digits than its factorization.

667714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333859.

The product of its digits is 7056, while the sum is 31.

The square root of 667714 is about 817.1376872963. The cubic root of 667714 is about 87.4037690356.

The spelling of 667714 in words is "six hundred sixty-seven thousand, seven hundred fourteen".