66315103 has 2 divisors, whose sum is σ = 66315104. Its totient is φ = 66315102.

The previous prime is 66315097. The next prime is 66315121. The reversal of 66315103 is 30151366.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66315103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66315133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33157551 + 33157552.

It is an arithmetic number, because the mean of its divisors is an integer number (33157552).

Almost surely, 2^66315103 is an apocalyptic number.

66315103 is a deficient number, since it is larger than the sum of its proper divisors (1).

66315103 is an equidigital number, since it uses as much as digits as its factorization.

66315103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 66315103 is about 8143.4085615300. The cubic root of 66315103 is about 404.7661160397.

Adding to 66315103 its reverse (30151366), we get a palindrome (96466469).

The spelling of 66315103 in words is "sixty-six million, three hundred fifteen thousand, one hundred three".