65144065 has 16 divisors (see below), whose sum is σ = 94043520. Its totient is φ = 42318720.

The previous prime is 65144059. The next prime is 65144089. The reversal of 65144065 is 56044156.

It is not a de Polignac number, because 65144065 - 2⁷ = 65143937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48316 + ... + 49645.

It is an arithmetic number, because the mean of its divisors is an integer number (5877720).

Almost surely, 2^65144065 is an apocalyptic number.

It is an amenable number.

65144065 is a deficient number, since it is larger than the sum of its proper divisors (28899455).

65144065 is a wasteful number, since it uses less digits than its factorization.

65144065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97992.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 65144065 is about 8071.1873352066. The cubic root of 65144065 is about 402.3694058275.

Subtracting from 65144065 its reverse (56044156), we obtain a palindrome (9099909).

The spelling of 65144065 in words is "sixty-five million, one hundred forty-four thousand, sixty-five".