666054 has 12 divisors (see below), whose sum is σ = 1443156. Its totient is φ = 222012.

The previous prime is 666041. The next prime is 666067. The reversal of 666054 is 450666.

It is an interprime number because it is at equal distance from previous prime (666041) and next prime (666067).

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 666054.

It is an unprimeable number.

666054 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 5 ways as a sum of consecutive naturals, for example, 18484 + ... + 18519.

It is an arithmetic number, because the mean of its divisors is an integer number (120263).

2⁶⁶⁶⁰⁵⁴ is an apocalyptic number.

666054 is an abundant number, since it is smaller than the sum of its proper divisors (777102).

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

666054 is a wasteful number, since it uses less digits than its factorization.

666054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37011 (or 37008 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 666054 is about 816.1213145115. The cubic root of 666054 is about 87.3312775902.

The spelling of 666054 in words is "six hundred sixty-six thousand, fifty-four".