66330180 has 144 divisors (see below), whose sum is σ = 233985024. Its totient is φ = 14895360.

The previous prime is 66330179. The next prime is 66330191. The reversal of 66330180 is 8103366.

66330180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 76429 + ... + 77291.

It is an arithmetic number, because the mean of its divisors is an integer number (1624896).

Almost surely, 2^66330180 is an apocalyptic number.

66330180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66330180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116992512).

66330180 is an abundant number, since it is smaller than the sum of its proper divisors (167654844).

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

66330180 is a wasteful number, since it uses less digits than its factorization.

66330180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 66330180 is about 8144.3342269335. The cubic root of 66330180 is about 404.7967887725.

The spelling of 66330180 in words is "sixty-six million, three hundred thirty thousand, one hundred eighty".