66366275 has 6 divisors (see below), whose sum is σ = 82294212. Its totient is φ = 53093000.

The previous prime is 66366269. The next prime is 66366277. The reversal of 66366275 is 57266366.

It is not a de Polignac number, because 66366275 - 2⁶ = 66366211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66366277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1327301 + ... + 1327350.

It is an arithmetic number, because the mean of its divisors is an integer number (13715702).

Almost surely, 2^66366275 is an apocalyptic number.

66366275 is a deficient number, since it is larger than the sum of its proper divisors (15927937).

66366275 is a wasteful number, since it uses less digits than its factorization.

66366275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654661 (or 2654656 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The square root of 66366275 is about 8146.5498832328. The cubic root of 66366275 is about 404.8702017627.

Subtracting from 66366275 its reverse (57266366), we obtain a palindrome (9099909).

The spelling of 66366275 in words is "sixty-six million, three hundred sixty-six thousand, two hundred seventy-five".