603668978609 has 2 divisors, whose sum is σ = 603668978610. Its totient is φ = 603668978608.

The previous prime is 603668978503. The next prime is 603668978669. The reversal of 603668978609 is 906879866306.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570784783009 + 32884195600 = 755503^2 + 181340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-603668978609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (603668978669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301834489304 + 301834489305.

It is an arithmetic number, because the mean of its divisors is an integer number (301834489305).

Almost surely, 2^603668978609 is an apocalyptic number.

It is an amenable number.

603668978609 is a deficient number, since it is larger than the sum of its proper divisors (1).

603668978609 is an equidigital number, since it uses as much as digits as its factorization.

603668978609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141087744, while the sum is 68.

The spelling of 603668978609 in words is "six hundred three billion, six hundred sixty-eight million, nine hundred seventy-eight thousand, six hundred nine".