66287675 has 24 divisors (see below), whose sum is σ = 91623600. Its totient is φ = 47278080.

The previous prime is 66287671. The next prime is 66287687. The reversal of 66287675 is 57678266.

It is not a de Polignac number, because 66287675 - 2² = 66287671 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66287671) by changing a digit.

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, 3971 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (3817650).

Almost surely, 2^66287675 is an apocalyptic number.

66287675 is a deficient number, since it is larger than the sum of its proper divisors (25335925).

66287675 is a wasteful number, since it uses less digits than its factorization.

66287675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255 (or 8250 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 66287675 is about 8141.7243259644. The cubic root of 66287675 is about 404.7103044398.

The spelling of 66287675 in words is "sixty-six million, two hundred eighty-seven thousand, six hundred seventy-five".