65819841 has 8 divisors (see below), whose sum is σ = 87828864. Its totient is φ = 43845360.

The previous prime is 65819839. The next prime is 65819849. The reversal of 65819841 is 14891856.

65819841 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 not a de Polignac number, because 65819841 - 2¹ = 65819839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65819793 and 65819802.

It is not an unprimeable number, because it can be changed into a prime (65819849) 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, 3801 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (10978608).

Almost surely, 2^65819841 is an apocalyptic number.

It is an amenable number.

65819841 is a deficient number, since it is larger than the sum of its proper divisors (22009023).

65819841 is a wasteful number, since it uses less digits than its factorization.

65819841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17271.

The product of its digits is 69120, while the sum is 42.

The square root of 65819841 is about 8112.9428076377. The cubic root of 65819841 is about 403.7559569966.

The spelling of 65819841 in words is "sixty-five million, eight hundred nineteen thousand, eight hundred forty-one".