65444441 has 8 divisors (see below), whose sum is σ = 71529984. Its totient is φ = 59607360.

The previous prime is 65444437. The next prime is 65444443. The reversal of 65444441 is 14444456.

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 65444441 - 2² = 65444437 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 65444398 and 65444407.

It is not an unprimeable number, because it can be changed into a prime (65444443) 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, 61565 + ... + 62618.

It is an arithmetic number, because the mean of its divisors is an integer number (8941248).

Almost surely, 2^65444441 is an apocalyptic number.

It is an amenable number.

65444441 is a deficient number, since it is larger than the sum of its proper divisors (6085543).

65444441 is a wasteful number, since it uses less digits than its factorization.

65444441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124231.

The product of its digits is 30720, while the sum is 32.

The square root of 65444441 is about 8089.7738534523. The cubic root of 65444441 is about 402.9868927467.

Adding to 65444441 its reverse (14444456), we get a palindrome (79888897).

The spelling of 65444441 in words is "sixty-five million, four hundred forty-four thousand, four hundred forty-one".