66000659 has 2 divisors, whose sum is σ = 66000660. Its totient is φ = 66000658.

The previous prime is 66000653. The next prime is 66000673. The reversal of 66000659 is 95600066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66000659 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66000653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000329 + 33000330.

It is an arithmetic number, because the mean of its divisors is an integer number (33000330).

Almost surely, 2^66000659 is an apocalyptic number.

66000659 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000659 is an equidigital number, since it uses as much as digits as its factorization.

66000659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 66000659 is about 8124.0789631810. The cubic root of 66000659 is about 404.1253470967.

The spelling of 66000659 in words is "sixty-six million, six hundred fifty-nine", and thus it is an aban number.