66338842 has 16 divisors (see below), whose sum is σ = 106466400. Its totient is φ = 30907440.

The previous prime is 66338827. The next prime is 66338843. The reversal of 66338842 is 24883366.

It is a junction number, because it is equal to n+sod(n) for n = 66338795 and 66338804.

It is not an unprimeable number, because it can be changed into a prime (66338843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11992 + ... + 16627.

It is an arithmetic number, because the mean of its divisors is an integer number (6654150).

Almost surely, 2^66338842 is an apocalyptic number.

66338842 is a deficient number, since it is larger than the sum of its proper divisors (40127558).

66338842 is a wasteful number, since it uses less digits than its factorization.

66338842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28701.

The product of its digits is 165888, while the sum is 40.

The square root of 66338842 is about 8144.8659903033. The cubic root of 66338842 is about 404.8144086913.

The spelling of 66338842 in words is "sixty-six million, three hundred thirty-eight thousand, eight hundred forty-two".