66057203 has 2 divisors, whose sum is σ = 66057204. Its totient is φ = 66057202.

The previous prime is 66057179. The next prime is 66057221. The reversal of 66057203 is 30275066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66057203 - 2⁶ = 66057139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66057263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33028601 + 33028602.

It is an arithmetic number, because the mean of its divisors is an integer number (33028602).

Almost surely, 2^66057203 is an apocalyptic number.

66057203 is a deficient number, since it is larger than the sum of its proper divisors (1).

66057203 is an equidigital number, since it uses as much as digits as its factorization.

66057203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 66057203 is about 8127.5582434087. The cubic root of 66057203 is about 404.2407214050.

The spelling of 66057203 in words is "sixty-six million, fifty-seven thousand, two hundred three".