611968673 has 2 divisors, whose sum is σ = 611968674. Its totient is φ = 611968672.

The previous prime is 611968639. The next prime is 611968699. The reversal of 611968673 is 376869116.

It is a happy number.

611968673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531901969 + 80066704 = 23063^2 + 8948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611968673 is a prime.

It is not a weakly prime, because it can be changed into another prime (611968633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305984336 + 305984337.

It is an arithmetic number, because the mean of its divisors is an integer number (305984337).

Almost surely, 2^611968673 is an apocalyptic number.

It is an amenable number.

611968673 is a deficient number, since it is larger than the sum of its proper divisors (1).

611968673 is an equidigital number, since it uses as much as digits as its factorization.

611968673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 611968673 is about 24738.0005861428. Note that the first 3 decimals coincide. The cubic root of 611968673 is about 849.0039881370.

The spelling of 611968673 in words is "six hundred eleven million, nine hundred sixty-eight thousand, six hundred seventy-three".