666084 has 24 divisors (see below), whose sum is σ = 1588608. Its totient is φ = 217120.

The previous prime is 666079. The next prime is 666089. The reversal of 666084 is 480666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (666079) and next prime (666089).

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 7 ways as a sum of consecutive naturals, for example, 27 + ... + 1154.

It is an arithmetic number, because the mean of its divisors is an integer number (66192).

2⁶⁶⁶⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

666084 is an abundant number, since it is smaller than the sum of its proper divisors (922524).

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

666084 is a wasteful number, since it uses less digits than its factorization.

666084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1233 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 666084 is about 816.1396939250. The cubic root of 666084 is about 87.3325887446.

The spelling of 666084 in words is "six hundred sixty-six thousand, eighty-four".