66607173 has 24 divisors (see below), whose sum is σ = 102211200. Its totient is φ = 41652864.

The previous prime is 66607133. The next prime is 66607183. The reversal of 66607173 is 37170666.

66607173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66607173 - 2⁶ = 66607109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66607133) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 63588 + ... + 64626.

It is an arithmetic number, because the mean of its divisors is an integer number (4258800).

Almost surely, 2^66607173 is an apocalyptic number.

It is an amenable number.

66607173 is a deficient number, since it is larger than the sum of its proper divisors (35604027).

66607173 is a wasteful number, since it uses less digits than its factorization.

66607173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 66607173 is about 8161.3217679491. The cubic root of 66607173 is about 405.3594796412.

The spelling of 66607173 in words is "sixty-six million, six hundred seven thousand, one hundred seventy-three".