666024 has 16 divisors (see below), whose sum is σ = 1665120. Its totient is φ = 222000.

The previous prime is 666023. The next prime is 666031. The reversal of 666024 is 420666.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 27751 = 666024 / (6 + 6 + 6 + 0 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 665985 and 666003.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 666024.

It is not an unprimeable number, because it can be changed into a prime (666023) 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, 13852 + ... + 13899.

It is an arithmetic number, because the mean of its divisors is an integer number (104070).

2⁶⁶⁶⁰²⁴ is an apocalyptic number.

It is an amenable number.

666024 is an abundant number, since it is smaller than the sum of its proper divisors (999096).

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

666024 is a wasteful number, since it uses less digits than its factorization.

666024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27760 (or 27756 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 666024 is about 816.1029346841. The cubic root of 666024 is about 87.3299663964.

The spelling of 666024 in words is "six hundred sixty-six thousand, twenty-four".