64839841 has 8 divisors (see below), whose sum is σ = 71704224. Its totient is φ = 58137120.

The previous prime is 64839833. The next prime is 64839847. The reversal of 64839841 is 14893846.

64839841 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 cyclic number.

It is not a de Polignac number, because 64839841 - 2³ = 64839833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64839847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39571 + ... + 41176.

It is an arithmetic number, because the mean of its divisors is an integer number (8963028).

Almost surely, 2^64839841 is an apocalyptic number.

It is an amenable number.

64839841 is a deficient number, since it is larger than the sum of its proper divisors (6864383).

64839841 is a wasteful number, since it uses less digits than its factorization.

64839841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80831.

The product of its digits is 165888, while the sum is 43.

The square root of 64839841 is about 8052.3189827527. The cubic root of 64839841 is about 401.7420707098.

The spelling of 64839841 in words is "sixty-four million, eight hundred thirty-nine thousand, eight hundred forty-one".