66194716 has 24 divisors (see below), whose sum is σ = 135470720. Its totient is φ = 27708912.

The previous prime is 66194707. The next prime is 66194749. The reversal of 66194716 is 61749166.

66194716 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 7 ways as a sum of consecutive naturals, for example, 26286 + ... + 28693.

Almost surely, 2^66194716 is an apocalyptic number.

It is an amenable number.

66194716 is an abundant number, since it is smaller than the sum of its proper divisors (69276004).

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

66194716 is a wasteful number, since it uses less digits than its factorization.

66194716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55033 (or 55031 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 66194716 is about 8136.0135201461. The cubic root of 66194716 is about 404.5210331304.

The spelling of 66194716 in words is "sixty-six million, one hundred ninety-four thousand, seven hundred sixteen".