66066260 has 48 divisors (see below), whose sum is σ = 150923136. Its totient is φ = 24147072.

The previous prime is 66066229. The next prime is 66066311. The reversal of 66066260 is 6266066.

66066260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 25547 + ... + 28013.

It is an arithmetic number, because the mean of its divisors is an integer number (3144232).

Almost surely, 2^66066260 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 66066260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75461568).

66066260 is an abundant number, since it is smaller than the sum of its proper divisors (84856876).

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

66066260 is a wasteful number, since it uses less digits than its factorization.

66066260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592 (or 2590 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66066260 is about 8128.1154027241. The cubic root of 66066260 is about 404.2591954989.

The spelling of 66066260 in words is "sixty-six million, sixty-six thousand, two hundred sixty".