666055453 has 8 divisors (see below), whose sum is σ = 762326208. Its totient is φ = 570064704.

The previous prime is 666055451. The next prime is 666055487. The reversal of 666055453 is 354550666.

It is a happy number.

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 666055453 - 2¹ = 666055451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666055451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64876 + ... + 74437.

It is an arithmetic number, because the mean of its divisors is an integer number (95290776).

Almost surely, 2^666055453 is an apocalyptic number.

It is an amenable number.

666055453 is a deficient number, since it is larger than the sum of its proper divisors (96270755).

666055453 is a wasteful number, since it uses less digits than its factorization.

666055453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140003.

The product of its (nonzero) digits is 324000, while the sum is 40.

The square root of 666055453 is about 25808.0501588167. The cubic root of 666055453 is about 873.3134109467.

The spelling of 666055453 in words is "six hundred sixty-six million, fifty-five thousand, four hundred fifty-three".