66331675 has 18 divisors (see below), whose sum is σ = 83900508. Its totient is φ = 52010640.

The previous prime is 66331667. The next prime is 66331687. The reversal of 66331675 is 57613366.

66331675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66331675 - 2³ = 66331667 is a prime.

It is a super-2 number, since 2×66331675² = 8799782216611250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 333226 + ... + 333424.

Almost surely, 2^66331675 is an apocalyptic number.

66331675 is a deficient number, since it is larger than the sum of its proper divisors (17568833).

66331675 is an equidigital number, since it uses as much as digits as its factorization.

66331675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 271 counting only the distinct ones).

The product of its digits is 68040, while the sum is 37.

The square root of 66331675 is about 8144.4260080131. The cubic root of 66331675 is about 404.7998299555.

The spelling of 66331675 in words is "sixty-six million, three hundred thirty-one thousand, six hundred seventy-five".