666088 has 16 divisors (see below), whose sum is σ = 1260000. Its totient is φ = 330096.

The previous prime is 666079. The next prime is 666089. The reversal of 666088 is 880666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (666089) by changing a digit.

666088 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 in 3 ways as a sum of consecutive naturals, for example, 813 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (78750).

2⁶⁶⁶⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

666088 is a deficient number, since it is larger than the sum of its proper divisors (593912).

666088 is a wasteful number, since it uses less digits than its factorization.

666088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 666088 is about 816.1421444822. The cubic root of 666088 is about 87.3327635622.

The spelling of 666088 in words is "six hundred sixty-six thousand, eighty-eight".