64247723 has 2 divisors, whose sum is σ = 64247724. Its totient is φ = 64247722.

The previous prime is 64247699. The next prime is 64247749. The reversal of 64247723 is 32774246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64247723 - 2¹⁴ = 64231339 is a prime.

It is not a weakly prime, because it can be changed into another prime (64247753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32123861 + 32123862.

It is an arithmetic number, because the mean of its divisors is an integer number (32123862).

Almost surely, 2^64247723 is an apocalyptic number.

64247723 is a deficient number, since it is larger than the sum of its proper divisors (1).

64247723 is an equidigital number, since it uses as much as digits as its factorization.

64247723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 35.

The square root of 64247723 is about 8015.4677343247. The cubic root of 64247723 is about 400.5154251404.

The spelling of 64247723 in words is "sixty-four million, two hundred forty-seven thousand, seven hundred twenty-three".