66981122 has 24 divisors (see below), whose sum is σ = 115204356. Its totient is φ = 29093376.

The previous prime is 66981073. The next prime is 66981151. The reversal of 66981122 is 22118966.

66981122 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 6 ways, for example, as 25391521 + 41589601 = 5039^2 + 6449^2 .

It is a plaindrome in base 11.

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 11 ways as a sum of consecutive naturals, for example, 83 + ... + 11574.

Almost surely, 2^66981122 is an apocalyptic number.

66981122 is a deficient number, since it is larger than the sum of its proper divisors (48223234).

66981122 is a wasteful number, since it uses less digits than its factorization.

66981122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11702 (or 11689 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 66981122 is about 8184.1995332470. The cubic root of 66981122 is about 406.1166602399.

The spelling of 66981122 in words is "sixty-six million, nine hundred eighty-one thousand, one hundred twenty-two".