66060559 has 2 divisors, whose sum is σ = 66060560. Its totient is φ = 66060558.

The previous prime is 66060557. The next prime is 66060563. The reversal of 66060559 is 95506066.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66060559 - 2¹ = 66060557 is a prime.

Together with 66060557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66060551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33030279 + 33030280.

It is an arithmetic number, because the mean of its divisors is an integer number (33030280).

Almost surely, 2^66060559 is an apocalyptic number.

66060559 is a deficient number, since it is larger than the sum of its proper divisors (1).

66060559 is an equidigital number, since it uses as much as digits as its factorization.

66060559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 66060559 is about 8127.7646988579. The cubic root of 66060559 is about 404.2475670319.

The spelling of 66060559 in words is "sixty-six million, sixty thousand, five hundred fifty-nine".