66560203 has 2 divisors, whose sum is σ = 66560204. Its totient is φ = 66560202.

The previous prime is 66560167. The next prime is 66560213. The reversal of 66560203 is 30206566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66560203 - 2²¹ = 64463051 is a prime.

It is not a weakly prime, because it can be changed into another prime (66560213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33280101 + 33280102.

It is an arithmetic number, because the mean of its divisors is an integer number (33280102).

Almost surely, 2^66560203 is an apocalyptic number.

66560203 is a deficient number, since it is larger than the sum of its proper divisors (1).

66560203 is an equidigital number, since it uses as much as digits as its factorization.

66560203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 66560203 is about 8158.4436628563. The cubic root of 66560203 is about 405.2641735296.

Adding to 66560203 its reverse (30206566), we get a palindrome (96766769).

The spelling of 66560203 in words is "sixty-six million, five hundred sixty thousand, two hundred three".