66025173 has 8 divisors (see below), whose sum is σ = 88185888. Its totient is φ = 43940624.

The previous prime is 66025153. The next prime is 66025187. The reversal of 66025173 is 37152066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66025173 - 2⁹ = 66024661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66025173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66025153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16986 + ... + 20507.

It is an arithmetic number, because the mean of its divisors is an integer number (11023236).

Almost surely, 2^66025173 is an apocalyptic number.

It is an amenable number.

66025173 is a deficient number, since it is larger than the sum of its proper divisors (22160715).

66025173 is a wasteful number, since it uses less digits than its factorization.

66025173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38083.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66025173 is about 8125.5875479869. The cubic root of 66025173 is about 404.1753743876.

The spelling of 66025173 in words is "sixty-six million, twenty-five thousand, one hundred seventy-three".