665333143 has 2 divisors, whose sum is σ = 665333144. Its totient is φ = 665333142.

The previous prime is 665333111. The next prime is 665333159. The reversal of 665333143 is 341333566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665333143 - 2⁵ = 665333111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665333099 and 665333108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665333173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332666571 + 332666572.

It is an arithmetic number, because the mean of its divisors is an integer number (332666572).

Almost surely, 2^665333143 is an apocalyptic number.

665333143 is a deficient number, since it is larger than the sum of its proper divisors (1).

665333143 is an equidigital number, since it uses as much as digits as its factorization.

665333143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 34.

The square root of 665333143 is about 25794.0524733901. The cubic root of 665333143 is about 872.9976058231.

The spelling of 665333143 in words is "six hundred sixty-five million, three hundred thirty-three thousand, one hundred forty-three".