66065950 has 12 divisors (see below), whose sum is σ = 122882760. Its totient is φ = 26426360.

The previous prime is 66065941. The next prime is 66065963. The reversal of 66065950 is 5956066.

It is a happy number.

66065950 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 5 ways as a sum of consecutive naturals, for example, 660610 + ... + 660709.

It is an arithmetic number, because the mean of its divisors is an integer number (10240230).

Almost surely, 2^66065950 is an apocalyptic number.

66065950 is a deficient number, since it is larger than the sum of its proper divisors (56816810).

66065950 is a wasteful number, since it uses less digits than its factorization.

66065950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321331 (or 1321326 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 66065950 is about 8128.0963330905. The cubic root of 66065950 is about 404.2585632016.

The spelling of 66065950 in words is "sixty-six million, sixty-five thousand, nine hundred fifty".