665030593 has 2 divisors, whose sum is σ = 665030594. Its totient is φ = 665030592.

The previous prime is 665030557. The next prime is 665030731. The reversal of 665030593 is 395030566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654745744 + 10284849 = 25588^2 + 3207^2 .

It is a cyclic number.

It is not a de Polignac number, because 665030593 - 2⁹ = 665030081 is a prime.

It is not a weakly prime, because it can be changed into another prime (665030393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332515296 + 332515297.

It is an arithmetic number, because the mean of its divisors is an integer number (332515297).

Almost surely, 2^665030593 is an apocalyptic number.

It is an amenable number.

665030593 is a deficient number, since it is larger than the sum of its proper divisors (1).

665030593 is an equidigital number, since it uses as much as digits as its factorization.

665030593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 37.

The square root of 665030593 is about 25788.1870824608. The cubic root of 665030593 is about 872.8652583546.

The spelling of 665030593 in words is "six hundred sixty-five million, thirty thousand, five hundred ninety-three".