666174441 has 4 divisors (see below), whose sum is σ = 888232592. Its totient is φ = 444116292.

The previous prime is 666174413. The next prime is 666174451. The reversal of 666174441 is 144471666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 666174441 - 2⁹ = 666173929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 666174441.

It is not an unprimeable number, because it can be changed into a prime (666174451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111029071 + ... + 111029076.

It is an arithmetic number, because the mean of its divisors is an integer number (222058148).

Almost surely, 2^666174441 is an apocalyptic number.

It is an amenable number.

666174441 is a deficient number, since it is larger than the sum of its proper divisors (222058151).

666174441 is a wasteful number, since it uses less digits than its factorization.

666174441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222058150.

The product of its digits is 96768, while the sum is 39.

The square root of 666174441 is about 25810.3553055745. The cubic root of 666174441 is about 873.3654124372.

The spelling of 666174441 in words is "six hundred sixty-six million, one hundred seventy-four thousand, four hundred forty-one".