66946093 has 2 divisors, whose sum is σ = 66946094. Its totient is φ = 66946092.

The previous prime is 66946079. The next prime is 66946127. The reversal of 66946093 is 39064966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66552964 + 393129 = 8158^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 66946093 - 2⁹ = 66945581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66946003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33473046 + 33473047.

It is an arithmetic number, because the mean of its divisors is an integer number (33473047).

Almost surely, 2^66946093 is an apocalyptic number.

It is an amenable number.

66946093 is a deficient number, since it is larger than the sum of its proper divisors (1).

66946093 is an equidigital number, since it uses as much as digits as its factorization.

66946093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 66946093 is about 8182.0592151365. The cubic root of 66946093 is about 406.0458525223.

The spelling of 66946093 in words is "sixty-six million, nine hundred forty-six thousand, ninety-three".