65394517 has 4 divisors (see below), whose sum is σ = 65531520. Its totient is φ = 65257516.

The previous prime is 65394509. The next prime is 65394521. The reversal of 65394517 is 71549356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65394517 - 2³ = 65394509 is a prime.

It is a Smith number, since the sum of its digits (40) 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 a self number, because there is not a number n which added to its sum of digits gives 65394517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65394557) 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 3 ways as a sum of consecutive naturals, for example, 67783 + ... + 68740.

It is an arithmetic number, because the mean of its divisors is an integer number (16382880).

Almost surely, 2^65394517 is an apocalyptic number.

It is an amenable number.

65394517 is a deficient number, since it is larger than the sum of its proper divisors (137003).

65394517 is a wasteful number, since it uses less digits than its factorization.

65394517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137002.

The product of its digits is 113400, while the sum is 40.

The square root of 65394517 is about 8086.6876408082. The cubic root of 65394517 is about 402.8843944274.

The spelling of 65394517 in words is "sixty-five million, three hundred ninety-four thousand, five hundred seventeen".