66395286 has 12 divisors (see below), whose sum is σ = 143856492. Its totient is φ = 22131756.

The previous prime is 66395257. The next prime is 66395299. The reversal of 66395286 is 68259366.

It is a happy number.

66395286 is a `hidden beast` number, since 6 + 639 + 5 + 2 + 8 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1844296 + ... + 1844331.

It is an arithmetic number, because the mean of its divisors is an integer number (11988041).

Almost surely, 2^66395286 is an apocalyptic number.

66395286 is an abundant number, since it is smaller than the sum of its proper divisors (77461206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66395286 is a wasteful number, since it uses less digits than its factorization.

66395286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688635 (or 3688632 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 66395286 is about 8148.3302584026. The cubic root of 66395286 is about 404.9291874365.

The spelling of 66395286 in words is "sixty-six million, three hundred ninety-five thousand, two hundred eighty-six".