66066003 has 8 divisors (see below), whose sum is σ = 97875600. Its totient is φ = 44043984.

The previous prime is 66065977. The next prime is 66066043. The reversal of 66066003 is 30066066.

66066003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66066003 - 2⁹ = 66065491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2446889 = 66066003 / (6 + 6 + 0 + 6 + 6 + 0 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (66066043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223418 + ... + 1223471.

It is an arithmetic number, because the mean of its divisors is an integer number (12234450).

Almost surely, 2^66066003 is an apocalyptic number.

66066003 is a deficient number, since it is larger than the sum of its proper divisors (31809597).

66066003 is a wasteful number, since it uses less digits than its factorization.

66066003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446898 (or 2446892 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 66066003 is about 8128.0995933859. The cubic root of 66066003 is about 404.2586713042.

The spelling of 66066003 in words is "sixty-six million, sixty-six thousand, three".