65934209 has 16 divisors (see below), whose sum is σ = 73328640. Its totient is φ = 58786560.

The previous prime is 65934133. The next prime is 65934217. The reversal of 65934209 is 90243956.

65934209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65934209 - 2¹² = 65930113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65934509) 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 15 ways as a sum of consecutive naturals, for example, 152057 + ... + 152489.

It is an arithmetic number, because the mean of its divisors is an integer number (4583040).

Almost surely, 2^65934209 is an apocalyptic number.

It is an amenable number.

65934209 is a deficient number, since it is larger than the sum of its proper divisors (7394431).

65934209 is a wasteful number, since it uses less digits than its factorization.

65934209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 65934209 is about 8119.9882389077. The cubic root of 65934209 is about 403.9896759934.

The spelling of 65934209 in words is "sixty-five million, nine hundred thirty-four thousand, two hundred nine".