66085530 has 32 divisors (see below), whose sum is σ = 181263744. Its totient is φ = 15105216.

The previous prime is 66085493. The next prime is 66085531. The reversal of 66085530 is 3558066.

66085530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66085530³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66085491 and 66085500.

It is not an unprimeable number, because it can be changed into a prime (66085531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157137 + ... + 157556.

It is an arithmetic number, because the mean of its divisors is an integer number (5664492).

Almost surely, 2^66085530 is an apocalyptic number.

66085530 is an abundant number, since it is smaller than the sum of its proper divisors (115178214).

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

66085530 is a wasteful number, since it uses less digits than its factorization.

66085530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314710.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 66085530 is about 8129.3007079330. The cubic root of 66085530 is about 404.2984960305.

The spelling of 66085530 in words is "sixty-six million, eighty-five thousand, five hundred thirty".