66271199 has 8 divisors (see below), whose sum is σ = 67063248. Its totient is φ = 65482560.

The previous prime is 66271189. The next prime is 66271201. The reversal of 66271199 is 99117266.

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 66271199 - 2⁸ = 66270943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66271189) 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, 70259 + ... + 71195.

It is an arithmetic number, because the mean of its divisors is an integer number (8382906).

Almost surely, 2^66271199 is an apocalyptic number.

66271199 is a deficient number, since it is larger than the sum of its proper divisors (792049).

66271199 is a wasteful number, since it uses less digits than its factorization.

66271199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its digits is 40824, while the sum is 41.

The square root of 66271199 is about 8140.7124381101. The cubic root of 66271199 is about 404.6767710090.

The spelling of 66271199 in words is "sixty-six million, two hundred seventy-one thousand, one hundred ninety-nine".