66094447 has 2 divisors, whose sum is σ = 66094448. Its totient is φ = 66094446.

The previous prime is 66094429. The next prime is 66094459. The reversal of 66094447 is 74449066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66094447 - 2¹¹ = 66092399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66094547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33047223 + 33047224.

It is an arithmetic number, because the mean of its divisors is an integer number (33047224).

Almost surely, 2^66094447 is an apocalyptic number.

66094447 is a deficient number, since it is larger than the sum of its proper divisors (1).

66094447 is an equidigital number, since it uses as much as digits as its factorization.

66094447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66094447 is about 8129.8491375917. The cubic root of 66094447 is about 404.3166793734.

The spelling of 66094447 in words is "sixty-six million, ninety-four thousand, four hundred forty-seven".