66733441 has 2 divisors, whose sum is σ = 66733442. Its totient is φ = 66733440.

The previous prime is 66733409. The next prime is 66733477. The reversal of 66733441 is 14433766.

66733441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53802225 + 12931216 = 7335^2 + 3596^2 .

It is a cyclic number.

It is not a de Polignac number, because 66733441 - 2⁵ = 66733409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66733397 and 66733406.

It is not a weakly prime, because it can be changed into another prime (66733481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33366720 + 33366721.

It is an arithmetic number, because the mean of its divisors is an integer number (33366721).

Almost surely, 2^66733441 is an apocalyptic number.

It is an amenable number.

66733441 is a deficient number, since it is larger than the sum of its proper divisors (1).

66733441 is an equidigital number, since it uses as much as digits as its factorization.

66733441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 66733441 is about 8169.0538619843. The cubic root of 66733441 is about 405.6154661922.

The spelling of 66733441 in words is "sixty-six million, seven hundred thirty-three thousand, four hundred forty-one".