66066156 has 54 divisors (see below), whose sum is σ = 180851580. Its totient is φ = 20326176.

The previous prime is 66066151. The next prime is 66066181. The reversal of 66066156 is 65166066.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66066156.

It is not an unprimeable number, because it can be changed into a prime (66066151) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 655 + ... + 11513.

Almost surely, 2^66066156 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 66066156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90425790).

66066156 is an abundant number, since it is smaller than the sum of its proper divisors (114785424).

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

66066156 is a wasteful number, since it uses less digits than its factorization.

66066156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10895 (or 10877 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 66066156 is about 8128.1090051746. The cubic root of 66066156 is about 404.2589833736.

The spelling of 66066156 in words is "sixty-six million, sixty-six thousand, one hundred fifty-six".