66589838 has 8 divisors (see below), whose sum is σ = 114154032. Its totient is φ = 28538496.

The previous prime is 66589763. The next prime is 66589841. The reversal of 66589838 is 83898566.

It is a happy number.

66589838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66589838.

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, 2378195 + ... + 2378222.

It is an arithmetic number, because the mean of its divisors is an integer number (14269254).

Almost surely, 2^66589838 is an apocalyptic number.

66589838 is a deficient number, since it is larger than the sum of its proper divisors (47564194).

66589838 is a wasteful number, since it uses less digits than its factorization.

66589838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756426.

The product of its digits is 2488320, while the sum is 53.

The square root of 66589838 is about 8160.2596772407. The cubic root of 66589838 is about 405.3243106749.

The spelling of 66589838 in words is "sixty-six million, five hundred eighty-nine thousand, eight hundred thirty-eight".