66003143 has 2 divisors, whose sum is σ = 66003144. Its totient is φ = 66003142.

The previous prime is 66003127. The next prime is 66003149. The reversal of 66003143 is 34130066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66003143 - 2⁴ = 66003127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66003149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33001571 + 33001572.

It is an arithmetic number, because the mean of its divisors is an integer number (33001572).

Almost surely, 2^66003143 is an apocalyptic number.

66003143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66003143 is an equidigital number, since it uses as much as digits as its factorization.

66003143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 66003143 is about 8124.2318406111. The cubic root of 66003143 is about 404.1304169187.

The spelling of 66003143 in words is "sixty-six million, three thousand, one hundred forty-three".