66284875 has 8 divisors (see below), whose sum is σ = 82723680. Its totient is φ = 53027800.

The previous prime is 66284861. The next prime is 66284893. The reversal of 66284875 is 57848266.

It is not a de Polignac number, because 66284875 - 2⁵ = 66284843 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 265015 + ... + 265264.

It is an arithmetic number, because the mean of its divisors is an integer number (10340460).

Almost surely, 2^66284875 is an apocalyptic number.

66284875 is a deficient number, since it is larger than the sum of its proper divisors (16438805).

66284875 is an equidigital number, since it uses as much as digits as its factorization.

66284875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530294 (or 530284 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 66284875 is about 8141.5523704021. The cubic root of 66284875 is about 404.7046060210.

The spelling of 66284875 in words is "sixty-six million, two hundred eighty-four thousand, eight hundred seventy-five".