666271423 has 8 divisors (see below), whose sum is σ = 701625600. Its totient is φ = 630946008.

The previous prime is 666271421. The next prime is 666271439. The reversal of 666271423 is 324172666.

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 666271423 - 2¹ = 666271421 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 (666271421) 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, 53640 + ... + 64882.

It is an arithmetic number, because the mean of its divisors is an integer number (87703200).

Almost surely, 2^666271423 is an apocalyptic number.

666271423 is a deficient number, since it is larger than the sum of its proper divisors (35354177).

666271423 is a wasteful number, since it uses less digits than its factorization.

666271423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14381.

The product of its digits is 72576, while the sum is 37.

The square root of 666271423 is about 25812.2339792587. The cubic root of 666271423 is about 873.4077920349.

The spelling of 666271423 in words is "six hundred sixty-six million, two hundred seventy-one thousand, four hundred twenty-three".