66360285 has 24 divisors (see below), whose sum is σ = 116605944. Its totient is φ = 34905600.

The previous prime is 66360251. The next prime is 66360317. The reversal of 66360285 is 58206366.

It can be written as a sum of positive squares in 4 ways, for example, as 68121 + 66292164 = 261^2 + 8142^2 .

It is not a de Polignac number, because 66360285 - 2⁷ = 66360157 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 6816 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (4858581).

Almost surely, 2^66360285 is an apocalyptic number.

It is an amenable number.

66360285 is a deficient number, since it is larger than the sum of its proper divisors (50245659).

66360285 is a wasteful number, since it uses less digits than its factorization.

66360285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20285 (or 20282 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 66360285 is about 8146.1822346422. The cubic root of 66360285 is about 404.8580206487.

The spelling of 66360285 in words is "sixty-six million, three hundred sixty thousand, two hundred eighty-five".