65144417 has 16 divisors (see below), whose sum is σ = 71745408. Its totient is φ = 58786560.

The previous prime is 65144413. The next prime is 65144447. The reversal of 65144417 is 71444156.

It is a cyclic number.

It is not a de Polignac number, because 65144417 - 2² = 65144413 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65144413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150233 + ... + 150665.

It is an arithmetic number, because the mean of its divisors is an integer number (4484088).

Almost surely, 2^65144417 is an apocalyptic number.

It is an amenable number.

65144417 is a deficient number, since it is larger than the sum of its proper divisors (6600991).

65144417 is a wasteful number, since it uses less digits than its factorization.

65144417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its digits is 13440, while the sum is 32.

The square root of 65144417 is about 8071.2091411386. The cubic root of 65144417 is about 402.3701305483.

The spelling of 65144417 in words is "sixty-five million, one hundred forty-four thousand, four hundred seventeen".