65806423 has 8 divisors (see below), whose sum is σ = 68374800. Its totient is φ = 63258048.

The previous prime is 65806399. The next prime is 65806451. The reversal of 65806423 is 32460856.

It is a happy number.

65806423 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 de Polignac number, because none of the positive numbers 2^k-65806423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65806453) 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, 1888 + ... + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (8546850).

Almost surely, 2^65806423 is an apocalyptic number.

65806423 is a deficient number, since it is larger than the sum of its proper divisors (2568377).

65806423 is a wasteful number, since it uses less digits than its factorization.

65806423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 65806423 is about 8112.1158152482. The cubic root of 65806423 is about 403.7285186359.

The spelling of 65806423 in words is "sixty-five million, eight hundred six thousand, four hundred twenty-three".