66530060 has 48 divisors (see below), whose sum is σ = 145424160. Its totient is φ = 25536000.

The previous prime is 66530047. The next prime is 66530071. The reversal of 66530060 is 6003566.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145352 + ... + 145808.

It is an arithmetic number, because the mean of its divisors is an integer number (3029670).

Almost surely, 2^66530060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66530060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72712080).

66530060 is an abundant number, since it is smaller than the sum of its proper divisors (78894100).

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

66530060 is a wasteful number, since it uses less digits than its factorization.

66530060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 66530060 is about 8156.5961037678. The cubic root of 66530060 is about 405.2029872052.

The spelling of 66530060 in words is "sixty-six million, five hundred thirty thousand, sixty".