66945176 has 16 divisors (see below), whose sum is σ = 127650600. Its totient is φ = 32905024.

The previous prime is 66945163. The next prime is 66945181. The reversal of 66945176 is 67154966.

It is a happy number.

66945176 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 70445 + ... + 71388.

Almost surely, 2^66945176 is an apocalyptic number.

It is an amenable number.

66945176 is a deficient number, since it is larger than the sum of its proper divisors (60705424).

66945176 is a wasteful number, since it uses less digits than its factorization.

66945176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141898 (or 141894 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 66945176 is about 8182.0031777065. The cubic root of 66945176 is about 406.0439985643.

The spelling of 66945176 in words is "sixty-six million, nine hundred forty-five thousand, one hundred seventy-six".