66324743 has 2 divisors, whose sum is σ = 66324744. Its totient is φ = 66324742.

The previous prime is 66324733. The next prime is 66324749. The reversal of 66324743 is 34742366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66324743 - 2⁸ = 66324487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66324749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33162371 + 33162372.

It is an arithmetic number, because the mean of its divisors is an integer number (33162372).

Almost surely, 2^66324743 is an apocalyptic number.

66324743 is a deficient number, since it is larger than the sum of its proper divisors (1).

66324743 is an equidigital number, since it uses as much as digits as its factorization.

66324743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 35.

The square root of 66324743 is about 8144.0004297642. Note that the first 3 decimals coincide. The cubic root of 66324743 is about 404.7857282453.

The spelling of 66324743 in words is "sixty-six million, three hundred twenty-four thousand, seven hundred forty-three".