65808534 has 16 divisors (see below), whose sum is σ = 143582400. Its totient is φ = 19941960.

The previous prime is 65808529. The next prime is 65808553. The reversal of 65808534 is 43580856.

It is a happy number.

65808534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 65808492 and 65808501.

It is a congruent number.

It is an unprimeable number.

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, 498484 + ... + 498615.

It is an arithmetic number, because the mean of its divisors is an integer number (8973900).

Almost surely, 2^65808534 is an apocalyptic number.

65808534 is an abundant number, since it is smaller than the sum of its proper divisors (77773866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65808534 is a wasteful number, since it uses less digits than its factorization.

65808534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997115.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 65808534 is about 8112.2459282248. The cubic root of 65808534 is about 403.7328356501.

The spelling of 65808534 in words is "sixty-five million, eight hundred eight thousand, five hundred thirty-four".