65289217 has 6 divisors (see below), whose sum is σ = 75948738. Its totient is φ = 55962144.

The previous prime is 65289209. The next prime is 65289233. The reversal of 65289217 is 71298256.

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 261121 = 8064^2 + 511^2 .

It is not a de Polignac number, because 65289217 - 2³ = 65289209 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 65289217.

It is not an unprimeable number, because it can be changed into a prime (65289247) 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 5 ways as a sum of consecutive naturals, for example, 666168 + ... + 666265.

It is an arithmetic number, because the mean of its divisors is an integer number (12658123).

Almost surely, 2^65289217 is an apocalyptic number.

It is an amenable number.

65289217 is a deficient number, since it is larger than the sum of its proper divisors (10659521).

65289217 is a wasteful number, since it uses less digits than its factorization.

65289217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332447 (or 1332440 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 65289217 is about 8080.1743174266. The cubic root of 65289217 is about 402.6680331804.

The spelling of 65289217 in words is "sixty-five million, two hundred eighty-nine thousand, two hundred seventeen".