666382 has 8 divisors (see below), whose sum is σ = 1014696. Its totient is φ = 328152.

The previous prime is 666353. The next prime is 666403. The reversal of 666382 is 283666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

666382 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, 2353 + ... + 2620.

It is an arithmetic number, because the mean of its divisors is an integer number (126837).

2⁶⁶⁶³⁸² is an apocalyptic number.

666382 is a deficient number, since it is larger than the sum of its proper divisors (348314).

666382 is a wasteful number, since it uses less digits than its factorization.

666382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its digits is 10368, while the sum is 31.

The square root of 666382 is about 816.3222402948. The cubic root of 666382 is about 87.3456107415.

The spelling of 666382 in words is "six hundred sixty-six thousand, three hundred eighty-two".