65044091 has 16 divisors (see below), whose sum is σ = 80201664. Its totient is φ = 51477504.

The previous prime is 65044073. The next prime is 65044093. The reversal of 65044091 is 19044056.

It is a cyclic number.

It is not a de Polignac number, because 65044091 - 2¹⁰ = 65043067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65044093) 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 15 ways as a sum of consecutive naturals, for example, 1151 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (5012604).

Almost surely, 2^65044091 is an apocalyptic number.

65044091 is a deficient number, since it is larger than the sum of its proper divisors (15157573).

65044091 is a wasteful number, since it uses less digits than its factorization.

65044091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 65044091 is about 8064.9916924942. The cubic root of 65044091 is about 402.1634670131.

The spelling of 65044091 in words is "sixty-five million, forty-four thousand, ninety-one".