64727723 has 2 divisors, whose sum is σ = 64727724. Its totient is φ = 64727722.

The previous prime is 64727711. The next prime is 64727753. The reversal of 64727723 is 32772746.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64727723 is a prime.

It is not a weakly prime, because it can be changed into another prime (64727753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32363861 + 32363862.

It is an arithmetic number, because the mean of its divisors is an integer number (32363862).

Almost surely, 2^64727723 is an apocalyptic number.

64727723 is a deficient number, since it is larger than the sum of its proper divisors (1).

64727723 is an equidigital number, since it uses as much as digits as its factorization.

64727723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 38.

The square root of 64727723 is about 8045.3541252079. The cubic root of 64727723 is about 401.5103792911.

The spelling of 64727723 in words is "sixty-four million, seven hundred twenty-seven thousand, seven hundred twenty-three".