65944441 has 4 divisors (see below), whose sum is σ = 67552884. Its totient is φ = 64336000.

The previous prime is 65944429. The next prime is 65944451. The reversal of 65944441 is 14444956.

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 28783225 + 37161216 = 5365^2 + 6096^2 .

It is a cyclic number.

It is not a de Polignac number, because 65944441 - 2⁹ = 65943929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65944441.

It is not an unprimeable number, because it can be changed into a prime (65944451) 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, 804160 + ... + 804241.

It is an arithmetic number, because the mean of its divisors is an integer number (16888221).

Almost surely, 2^65944441 is an apocalyptic number.

It is an amenable number.

65944441 is a deficient number, since it is larger than the sum of its proper divisors (1608443).

65944441 is a wasteful number, since it uses less digits than its factorization.

65944441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608442.

The product of its digits is 69120, while the sum is 37.

The square root of 65944441 is about 8120.6182646397. The cubic root of 65944441 is about 404.0105726247.

The spelling of 65944441 in words is "sixty-five million, nine hundred forty-four thousand, four hundred forty-one".