4065823 has 2 divisors, whose sum is σ = 4065824. Its totient is φ = 4065822.

The previous prime is 4065821. The next prime is 4065857. The reversal of 4065823 is 3285604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4065823 - 2¹ = 4065821 is a prime.

Together with 4065821, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4065791 and 4065800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4065821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2032911 + 2032912.

It is an arithmetic number, because the mean of its divisors is an integer number (2032912).

Almost surely, 2^4065823 is an apocalyptic number.

4065823 is a deficient number, since it is larger than the sum of its proper divisors (1).

4065823 is an equidigital number, since it uses as much as digits as its factorization.

4065823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4065823 is about 2016.3886034195. The cubic root of 4065823 is about 159.6061013825.

The spelling of 4065823 in words is "four million, sixty-five thousand, eight hundred twenty-three".