66470172 has 12 divisors (see below), whose sum is σ = 155097096. Its totient is φ = 22156720.

The previous prime is 66470147. The next prime is 66470197. The reversal of 66470172 is 27107466.

66470172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66470147) and next prime (66470197).

It is a tau number, because it is divible by the number of its divisors (12).

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, 2769579 + ... + 2769602.

It is an arithmetic number, because the mean of its divisors is an integer number (12924758).

Almost surely, 2^66470172 is an apocalyptic number.

It is an amenable number.

66470172 is an abundant number, since it is smaller than the sum of its proper divisors (88626924).

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

66470172 is a wasteful number, since it uses less digits than its factorization.

66470172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539188 (or 5539186 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 66470172 is about 8152.9241380010. The cubic root of 66470172 is about 405.0813675869.

The spelling of 66470172 in words is "sixty-six million, four hundred seventy thousand, one hundred seventy-two".