666086 has 8 divisors (see below), whose sum is σ = 1023624. Its totient is φ = 324880.

The previous prime is 666079. The next prime is 666089. The reversal of 666086 is 680666.

It is a happy number.

666086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666089) 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, 3980 + ... + 4143.

It is an arithmetic number, because the mean of its divisors is an integer number (127953).

2⁶⁶⁶⁰⁸⁶ is an apocalyptic number.

666086 is a deficient number, since it is larger than the sum of its proper divisors (357538).

666086 is a wasteful number, since it uses less digits than its factorization.

666086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166.

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

The square root of 666086 is about 816.1409192045. The cubic root of 666086 is about 87.3326761535.

The spelling of 666086 in words is "six hundred sixty-six thousand, eighty-six".