66068659 has 2 divisors, whose sum is σ = 66068660. Its totient is φ = 66068658.

The previous prime is 66068623. The next prime is 66068663. The reversal of 66068659 is 95686066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66068659 is a prime.

It is not a weakly prime, because it can be changed into another prime (66068609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33034329 + 33034330.

It is an arithmetic number, because the mean of its divisors is an integer number (33034330).

Almost surely, 2^66068659 is an apocalyptic number.

66068659 is a deficient number, since it is larger than the sum of its proper divisors (1).

66068659 is an equidigital number, since it uses as much as digits as its factorization.

66068659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 66068659 is about 8128.2629755686. The cubic root of 66068659 is about 404.2640885970.

The spelling of 66068659 in words is "sixty-six million, sixty-eight thousand, six hundred fifty-nine".