64320743 has 2 divisors, whose sum is σ = 64320744. Its totient is φ = 64320742.

The previous prime is 64320727. The next prime is 64320821. The reversal of 64320743 is 34702346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64320743 - 2⁴ = 64320727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64320713) 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, 32160371 + 32160372.

It is an arithmetic number, because the mean of its divisors is an integer number (32160372).

Almost surely, 2^64320743 is an apocalyptic number.

64320743 is a deficient number, since it is larger than the sum of its proper divisors (1).

64320743 is an equidigital number, since it uses as much as digits as its factorization.

64320743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 64320743 is about 8020.0213840114. The cubic root of 64320743 is about 400.6671014041.

The spelling of 64320743 in words is "sixty-four million, three hundred twenty thousand, seven hundred forty-three".