64743743 has 2 divisors, whose sum is σ = 64743744. Its totient is φ = 64743742.

The previous prime is 64743719. The next prime is 64743761. The reversal of 64743743 is 34734746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64743743 - 2¹⁰ = 64742719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64743697 and 64743706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64743443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32371871 + 32371872.

It is an arithmetic number, because the mean of its divisors is an integer number (32371872).

Almost surely, 2^64743743 is an apocalyptic number.

64743743 is a deficient number, since it is larger than the sum of its proper divisors (1).

64743743 is an equidigital number, since it uses as much as digits as its factorization.

64743743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 38.

The square root of 64743743 is about 8046.3496692600. The cubic root of 64743743 is about 401.5435009346.

The spelling of 64743743 in words is "sixty-four million, seven hundred forty-three thousand, seven hundred forty-three".