64247423 has 2 divisors, whose sum is σ = 64247424. Its totient is φ = 64247422.

The previous prime is 64247419. The next prime is 64247473. The reversal of 64247423 is 32474246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64247423 - 2² = 64247419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64247423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64247473) 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, 32123711 + 32123712.

It is an arithmetic number, because the mean of its divisors is an integer number (32123712).

Almost surely, 2^64247423 is an apocalyptic number.

64247423 is a deficient number, since it is larger than the sum of its proper divisors (1).

64247423 is an equidigital number, since it uses as much as digits as its factorization.

64247423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 32.

The square root of 64247423 is about 8015.4490204854. The cubic root of 64247423 is about 400.5148017470.

The spelling of 64247423 in words is "sixty-four million, two hundred forty-seven thousand, four hundred twenty-three".