66375283 has 4 divisors (see below), whose sum is σ = 71481088. Its totient is φ = 61269480.

The previous prime is 66375277. The next prime is 66375289. The reversal of 66375283 is 38257366.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66375277) and next prime (66375289).

It is a cyclic number.

It is not a de Polignac number, because 66375283 - 2⁵ = 66375251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66375289) 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 3 ways as a sum of consecutive naturals, for example, 2552883 + ... + 2552908.

It is an arithmetic number, because the mean of its divisors is an integer number (17870272).

Almost surely, 2^66375283 is an apocalyptic number.

66375283 is a deficient number, since it is larger than the sum of its proper divisors (5105805).

66375283 is a wasteful number, since it uses less digits than its factorization.

66375283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105804.

The product of its digits is 181440, while the sum is 40.

The square root of 66375283 is about 8147.1027365561. The cubic root of 66375283 is about 404.8885188260. Note that the first 3 decimals are identical.

The spelling of 66375283 in words is "sixty-six million, three hundred seventy-five thousand, two hundred eighty-three".