65299989 has 8 divisors (see below), whose sum is σ = 87104160. Its totient is φ = 43514576.

The previous prime is 65299973. The next prime is 65299999. The reversal of 65299989 is 98999256.

65299989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65299989 - 2⁴ = 65299973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65299939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10114 + ... + 15260.

It is an arithmetic number, because the mean of its divisors is an integer number (10888020).

Almost surely, 2^65299989 is an apocalyptic number.

It is an amenable number.

65299989 is a deficient number, since it is larger than the sum of its proper divisors (21804171).

65299989 is a wasteful number, since it uses less digits than its factorization.

65299989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9379.

The product of its digits is 3149280, while the sum is 57.

The square root of 65299989 is about 8080.8408597126. The cubic root of 65299989 is about 402.6901772226.

The spelling of 65299989 in words is "sixty-five million, two hundred ninety-nine thousand, nine hundred eighty-nine".