65405723 has 2 divisors, whose sum is σ = 65405724. Its totient is φ = 65405722.

The previous prime is 65405719. The next prime is 65405761. The reversal of 65405723 is 32750456.

65405723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65405723 - 2² = 65405719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65405723.

It is not a weakly prime, because it can be changed into another prime (65405023) 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 as a sum of consecutive naturals, namely, 32702861 + 32702862.

It is an arithmetic number, because the mean of its divisors is an integer number (32702862).

Almost surely, 2^65405723 is an apocalyptic number.

65405723 is a deficient number, since it is larger than the sum of its proper divisors (1).

65405723 is an equidigital number, since it uses as much as digits as its factorization.

65405723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 65405723 is about 8087.3804782513. The cubic root of 65405723 is about 402.9074058606.

The spelling of 65405723 in words is "sixty-five million, four hundred five thousand, seven hundred twenty-three".