660444341 has 2 divisors, whose sum is σ = 660444342. Its totient is φ = 660444340.

The previous prime is 660444299. The next prime is 660444383. The reversal of 660444341 is 143444066.

It is a balanced prime because it is at equal distance from previous prime (660444299) and next prime (660444383).

It can be written as a sum of positive squares in only one way, i.e., 566916100 + 93528241 = 23810^2 + 9671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660444341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660444298 and 660444307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660444391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330222170 + 330222171.

It is an arithmetic number, because the mean of its divisors is an integer number (330222171).

Almost surely, 2^660444341 is an apocalyptic number.

It is an amenable number.

660444341 is a deficient number, since it is larger than the sum of its proper divisors (1).

660444341 is an equidigital number, since it uses as much as digits as its factorization.

660444341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 660444341 is about 25699.1116772545. Note that the first 3 decimals coincide. The cubic root of 660444341 is about 870.8541138656.

The spelling of 660444341 in words is "six hundred sixty million, four hundred forty-four thousand, three hundred forty-one".