66011203 has 2 divisors, whose sum is σ = 66011204. Its totient is φ = 66011202.

The previous prime is 66011201. The next prime is 66011207. The reversal of 66011203 is 30211066.

66011203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66011203 - 2¹ = 66011201 is a prime.

Together with 66011201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66011201) 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 as a sum of consecutive naturals, namely, 33005601 + 33005602.

It is an arithmetic number, because the mean of its divisors is an integer number (33005602).

Almost surely, 2^66011203 is an apocalyptic number.

66011203 is a deficient number, since it is larger than the sum of its proper divisors (1).

66011203 is an equidigital number, since it uses as much as digits as its factorization.

66011203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 66011203 is about 8124.7278723659. The cubic root of 66011203 is about 404.1468664312.

Adding to 66011203 its reverse (30211066), we get a palindrome (96222269).

The spelling of 66011203 in words is "sixty-six million, eleven thousand, two hundred three".