66108528 has 80 divisors (see below), whose sum is σ = 191312160. Its totient is φ = 21855744.

The previous prime is 66108521. The next prime is 66108533. The reversal of 66108528 is 82580166.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 66108492 and 66108501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66108521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58626 + ... + 59742.

It is an arithmetic number, because the mean of its divisors is an integer number (2391402).

Almost surely, 2^66108528 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 66108528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95656080).

66108528 is an abundant number, since it is smaller than the sum of its proper divisors (125203632).

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

66108528 is a wasteful number, since it uses less digits than its factorization.

66108528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 66108528 is about 8130.7150977020. The cubic root of 66108528 is about 404.3453896971.

The spelling of 66108528 in words is "sixty-six million, one hundred eight thousand, five hundred twenty-eight".