65836849 has 4 divisors (see below), whose sum is σ = 70901236. Its totient is φ = 60772464.

The previous prime is 65836847. The next prime is 65836867. The reversal of 65836849 is 94863856.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15880225 + 49956624 = 3985^2 + 7068^2 .

It is a cyclic number.

It is not a de Polignac number, because 65836849 - 2¹ = 65836847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65836847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532174 + ... + 2532199.

It is an arithmetic number, because the mean of its divisors is an integer number (17725309).

Almost surely, 2^65836849 is an apocalyptic number.

It is an amenable number.

65836849 is a deficient number, since it is larger than the sum of its proper divisors (5064387).

65836849 is a wasteful number, since it uses less digits than its factorization.

65836849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064386.

The product of its digits is 1244160, while the sum is 49.

The square root of 65836849 is about 8113.9909415774. The cubic root of 65836849 is about 403.7907311610.

The spelling of 65836849 in words is "sixty-five million, eight hundred thirty-six thousand, eight hundred forty-nine".