660465313 has 2 divisors, whose sum is σ = 660465314. Its totient is φ = 660465312.

The previous prime is 660465259. The next prime is 660465319. The reversal of 660465313 is 313564066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 582884449 + 77580864 = 24143^2 + 8808^2 .

It is a cyclic number.

It is not a de Polignac number, because 660465313 - 2⁹ = 660464801 is a prime.

It is not a weakly prime, because it can be changed into another prime (660465319) 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, 330232656 + 330232657.

It is an arithmetic number, because the mean of its divisors is an integer number (330232657).

Almost surely, 2^660465313 is an apocalyptic number.

It is an amenable number.

660465313 is a deficient number, since it is larger than the sum of its proper divisors (1).

660465313 is an equidigital number, since it uses as much as digits as its factorization.

660465313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 660465313 is about 25699.5197036832. The cubic root of 660465313 is about 870.8633315786.

It can be divided in two parts, 6604 and 65313, that added together give a palindrome (71917).

The spelling of 660465313 in words is "six hundred sixty million, four hundred sixty-five thousand, three hundred thirteen".