666030 has 24 divisors (see below), whose sum is σ = 1609272. Its totient is φ = 176416.

The previous prime is 666023. The next prime is 666031. The reversal of 666030 is 30666.

666030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665988 and 666006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4396 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (67053).

2⁶⁶⁶⁰³⁰ is an apocalyptic number.

666030 is an abundant number, since it is smaller than the sum of its proper divisors (943242).

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

666030 is a wasteful number, since it uses less digits than its factorization.

666030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 666030 is about 816.1066106827. The cubic root of 666030 is about 87.3302286383.

Adding to 666030 its reverse (30666), we get a palindrome (696696).

The spelling of 666030 in words is "six hundred sixty-six thousand, thirty".