666023453 has 4 divisors (see below), whose sum is σ = 666217728. Its totient is φ = 665829180.

The previous prime is 666023429. The next prime is 666023459. The reversal of 666023453 is 354320666.

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 a cyclic number.

It is not a de Polignac number, because 666023453 - 2⁶ = 666023389 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 (666023459) 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 3 ways as a sum of consecutive naturals, for example, 91901 + ... + 98882.

It is an arithmetic number, because the mean of its divisors is an integer number (166554432).

Almost surely, 2^666023453 is an apocalyptic number.

It is an amenable number.

666023453 is a deficient number, since it is larger than the sum of its proper divisors (194275).

666023453 is a wasteful number, since it uses less digits than its factorization.

666023453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194274.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 666023453 is about 25807.4301897729. The cubic root of 666023453 is about 873.2994248856.

The spelling of 666023453 in words is "six hundred sixty-six million, twenty-three thousand, four hundred fifty-three".