666068 has 12 divisors (see below), whose sum is σ = 1255380. Its totient is φ = 307392.

The previous prime is 666067. The next prime is 666073. The reversal of 666068 is 860666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 150544 + 515524 = 388^2 + 718^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 666068.

It is not an unprimeable number, because it can be changed into a prime (666067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6353 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (104615).

2⁶⁶⁶⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

666068 is a deficient number, since it is larger than the sum of its proper divisors (589312).

666068 is a wasteful number, since it uses less digits than its factorization.

666068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12826 (or 12824 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 666068 is about 816.1298916227. The cubic root of 666068 is about 87.3318894672.

The spelling of 666068 in words is "six hundred sixty-six thousand, sixty-eight".