667068 has 12 divisors (see below), whose sum is σ = 1556520. Its totient is φ = 222352.

The previous prime is 667021. The next prime is 667081. The reversal of 667068 is 860766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27783 + ... + 27806.

It is an arithmetic number, because the mean of its divisors is an integer number (129710).

2⁶⁶⁷⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

667068 is an abundant number, since it is smaller than the sum of its proper divisors (889452).

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

667068 is a wasteful number, since it uses less digits than its factorization.

667068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55596 (or 55594 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 667068 is about 816.7423094220. The cubic root of 667068 is about 87.3755728051.

The spelling of 667068 in words is "six hundred sixty-seven thousand, sixty-eight".