66360859 has 2 divisors, whose sum is σ = 66360860. Its totient is φ = 66360858.

The previous prime is 66360857. The next prime is 66360871. The reversal of 66360859 is 95806366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66360859 - 2¹ = 66360857 is a prime.

Together with 66360857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66360857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33180429 + 33180430.

It is an arithmetic number, because the mean of its divisors is an integer number (33180430).

Almost surely, 2^66360859 is an apocalyptic number.

66360859 is a deficient number, since it is larger than the sum of its proper divisors (1).

66360859 is an equidigital number, since it uses as much as digits as its factorization.

66360859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 66360859 is about 8146.2174657936. The cubic root of 66360859 is about 404.8591879525.

The spelling of 66360859 in words is "sixty-six million, three hundred sixty thousand, eight hundred fifty-nine".