65439073 has 8 divisors (see below), whose sum is σ = 74839680. Its totient is φ = 56051520.

The previous prime is 65439053. The next prime is 65439079. The reversal of 65439073 is 37093456.

65439073 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 not a de Polignac number, because 65439073 - 2⁵ = 65439041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65439079) 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, 12708 + ... + 17098.

It is an arithmetic number, because the mean of its divisors is an integer number (9354960).

Almost surely, 2^65439073 is an apocalyptic number.

It is an amenable number.

65439073 is a deficient number, since it is larger than the sum of its proper divisors (9400607).

65439073 is a wasteful number, since it uses less digits than its factorization.

65439073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 65439073 is about 8089.4420697598. The cubic root of 65439073 is about 402.9758742769.

The spelling of 65439073 in words is "sixty-five million, four hundred thirty-nine thousand, seventy-three".