667006 has 4 divisors (see below), whose sum is σ = 1000512. Its totient is φ = 333502.

The previous prime is 666989. The next prime is 667013. The reversal of 667006 is 600766.

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

It is a congruent number.

It is an unprimeable number.

667006 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, 166750 + ... + 166753.

It is an arithmetic number, because the mean of its divisors is an integer number (250128).

2⁶⁶⁷⁰⁰⁶ is an apocalyptic number.

667006 is a deficient number, since it is larger than the sum of its proper divisors (333506).

667006 is a wasteful number, since it uses less digits than its factorization.

667006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333505.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 667006 is about 816.7043528720. The cubic root of 667006 is about 87.3728657081.

The spelling of 667006 in words is "six hundred sixty-seven thousand, six".