66006873 has 8 divisors (see below), whose sum is σ = 97788000. Its totient is φ = 44004564.

The previous prime is 66006827. The next prime is 66006877. The reversal of 66006873 is 37860066.

It is a happy number.

It is not a de Polignac number, because 66006873 - 2⁸ = 66006617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66006877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222323 + ... + 1222376.

It is an arithmetic number, because the mean of its divisors is an integer number (12223500).

Almost surely, 2^66006873 is an apocalyptic number.

It is an amenable number.

66006873 is a deficient number, since it is larger than the sum of its proper divisors (31781127).

66006873 is a wasteful number, since it uses less digits than its factorization.

66006873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444708 (or 2444702 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66006873 is about 8124.4613975328. The cubic root of 66006873 is about 404.1380295766.

The spelling of 66006873 in words is "sixty-six million, six thousand, eight hundred seventy-three".