66661122 has 32 divisors (see below), whose sum is σ = 146018304. Its totient is φ = 20120400.

The previous prime is 66661109. The next prime is 66661151. The reversal of 66661122 is 22116666.

66661122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 66661122.

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, 16023 + ... + 19749.

It is an arithmetic number, because the mean of its divisors is an integer number (4563072).

Almost surely, 2^66661122 is an apocalyptic number.

66661122 is an abundant number, since it is smaller than the sum of its proper divisors (79357182).

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

66661122 is a wasteful number, since it uses less digits than its factorization.

66661122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014.

The product of its digits is 5184, while the sum is 30.

The square root of 66661122 is about 8164.6262621139. The cubic root of 66661122 is about 405.4688914657.

Adding to 66661122 its reverse (22116666), we get a palindrome (88777788).

The spelling of 66661122 in words is "sixty-six million, six hundred sixty-one thousand, one hundred twenty-two".