66175172 has 12 divisors (see below), whose sum is σ = 132350400. Its totient is φ = 28360776.

The previous prime is 66175171. The next prime is 66175177. The reversal of 66175172 is 27157166.

66175172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66175171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181672 + ... + 1181727.

It is an arithmetic number, because the mean of its divisors is an integer number (11029200).

Almost surely, 2^66175172 is an apocalyptic number.

It is an amenable number.

66175172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66175172 is a wasteful number, since it uses less digits than its factorization.

66175172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363410 (or 2363408 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 66175172 is about 8134.8123518616. The cubic root of 66175172 is about 404.4812175793.

The spelling of 66175172 in words is "sixty-six million, one hundred seventy-five thousand, one hundred seventy-two".