66659112 has 160 divisors (see below), whose sum is σ = 207040680. Its totient is φ = 19906560.

The previous prime is 66659093. The next prime is 66659137. The reversal of 66659112 is 21195666.

66659112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19131876 + 47527236 = 4374^2 + 6894^2 .

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

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 39 ways as a sum of consecutive naturals, for example, 345288 + ... + 345480.

Almost surely, 2^66659112 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 66659112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103520340).

66659112 is an abundant number, since it is smaller than the sum of its proper divisors (140381568).

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

66659112 is a wasteful number, since it uses less digits than its factorization.

66659112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 252 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 66659112 is about 8164.5031692075. The cubic root of 66659112 is about 405.4648161234.

The spelling of 66659112 in words is "sixty-six million, six hundred fifty-nine thousand, one hundred twelve".