65684289 has 8 divisors (see below), whose sum is σ = 95540832. Its totient is φ = 39808640.

The previous prime is 65684279. The next prime is 65684293. The reversal of 65684289 is 98248656.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65684289 - 2⁷ = 65684161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65684219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995184 + ... + 995249.

It is an arithmetic number, because the mean of its divisors is an integer number (11942604).

Almost surely, 2^65684289 is an apocalyptic number.

It is an amenable number.

65684289 is a deficient number, since it is larger than the sum of its proper divisors (29856543).

65684289 is a wasteful number, since it uses less digits than its factorization.

65684289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990447.

The product of its digits is 829440, while the sum is 48.

The square root of 65684289 is about 8104.5844433876. The cubic root of 65684289 is about 403.4785961446.

The spelling of 65684289 in words is "sixty-five million, six hundred eighty-four thousand, two hundred eighty-nine".