66488113 has 2 divisors, whose sum is σ = 66488114. Its totient is φ = 66488112.

The previous prime is 66488099. The next prime is 66488137. The reversal of 66488113 is 31188466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58262689 + 8225424 = 7633^2 + 2868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66488113 is a prime.

It is not a weakly prime, because it can be changed into another prime (66488413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33244056 + 33244057.

It is an arithmetic number, because the mean of its divisors is an integer number (33244057).

Almost surely, 2^66488113 is an apocalyptic number.

It is an amenable number.

66488113 is a deficient number, since it is larger than the sum of its proper divisors (1).

66488113 is an equidigital number, since it uses as much as digits as its factorization.

66488113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 66488113 is about 8154.0243438440. The cubic root of 66488113 is about 405.1178095519.

The spelling of 66488113 in words is "sixty-six million, four hundred eighty-eight thousand, one hundred thirteen".