66634072 has 16 divisors (see below), whose sum is σ = 125155800. Its totient is φ = 33259200.

The previous prime is 66634037. The next prime is 66634081. The reversal of 66634072 is 27043666.

66634072 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, 2122 + ... + 11737.

Almost surely, 2^66634072 is an apocalyptic number.

It is an amenable number.

66634072 is a deficient number, since it is larger than the sum of its proper divisors (58521728).

66634072 is a wasteful number, since it uses less digits than its factorization.

66634072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14466 (or 14462 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 66634072 is about 8162.9695577039. The cubic root of 66634072 is about 405.4140398167.

The spelling of 66634072 in words is "sixty-six million, six hundred thirty-four thousand, seventy-two".