66339841 has 8 divisors (see below), whose sum is σ = 68406624. Its totient is φ = 64296960.

The previous prime is 66339817. The next prime is 66339857. The reversal of 66339841 is 14893366.

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

It is a cyclic number.

It is not a de Polignac number, because 66339841 - 2¹¹ = 66337793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66339794 and 66339803.

It is not an unprimeable number, because it can be changed into a prime (66339881) 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, 256 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (8550828).

Almost surely, 2^66339841 is an apocalyptic number.

It is an amenable number.

66339841 is a deficient number, since it is larger than the sum of its proper divisors (2066783).

66339841 is a wasteful number, since it uses less digits than its factorization.

66339841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11951.

The product of its digits is 93312, while the sum is 40.

The square root of 66339841 is about 8144.9273170483. The cubic root of 66339841 is about 404.8164407214.

It can be divided in two parts, 663 and 39841, that added together give a palindrome (40504).

The spelling of 66339841 in words is "sixty-six million, three hundred thirty-nine thousand, eight hundred forty-one".