66466607 has 2 divisors, whose sum is σ = 66466608. Its totient is φ = 66466606.

The previous prime is 66466559. The next prime is 66466643. The reversal of 66466607 is 70666466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66466607 - 2²⁴ = 49689391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66466667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33233303 + 33233304.

It is an arithmetic number, because the mean of its divisors is an integer number (33233304).

Almost surely, 2^66466607 is an apocalyptic number.

66466607 is a deficient number, since it is larger than the sum of its proper divisors (1).

66466607 is an equidigital number, since it uses as much as digits as its factorization.

66466607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 66466607 is about 8152.7055018564. The cubic root of 66466607 is about 405.0741255371.

The spelling of 66466607 in words is "sixty-six million, four hundred sixty-six thousand, six hundred seven".