65838539 has 4 divisors (see below), whose sum is σ = 70903056. Its totient is φ = 60774024.

The previous prime is 65838533. The next prime is 65838623. The reversal of 65838539 is 93583856.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 65838539 - 2⁴ = 65838523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65838493 and 65838502.

It is not an unprimeable number, because it can be changed into a prime (65838533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532239 + ... + 2532264.

It is an arithmetic number, because the mean of its divisors is an integer number (17725764).

Almost surely, 2^65838539 is an apocalyptic number.

65838539 is a deficient number, since it is larger than the sum of its proper divisors (5064517).

65838539 is a wasteful number, since it uses less digits than its factorization.

65838539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064516.

The product of its digits is 777600, while the sum is 47.

The square root of 65838539 is about 8114.0950820162. The cubic root of 65838539 is about 403.7941861689.

The spelling of 65838539 in words is "sixty-five million, eight hundred thirty-eight thousand, five hundred thirty-nine".