66408227 has 8 divisors (see below), whose sum is σ = 67943232. Its totient is φ = 64878400.

The previous prime is 66408203. The next prime is 66408253. The reversal of 66408227 is 72280466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66408227 - 2⁶ = 66408163 is a prime.

It is a super-2 number, since 2×66408227² = 8820105226567058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66408127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37727 + ... + 39447.

It is an arithmetic number, because the mean of its divisors is an integer number (8492904).

Almost surely, 2^66408227 is an apocalyptic number.

66408227 is a deficient number, since it is larger than the sum of its proper divisors (1535005).

66408227 is a wasteful number, since it uses less digits than its factorization.

66408227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 66408227 is about 8149.1243087831. The cubic root of 66408227 is about 404.9554937630.

The spelling of 66408227 in words is "sixty-six million, four hundred eight thousand, two hundred twenty-seven".