744691693 has 2 divisors, whose sum is σ = 744691694. Its totient is φ = 744691692.

The previous prime is 744691691. The next prime is 744691697. The reversal of 744691693 is 396196447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731053444 + 13638249 = 27038^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 744691693 - 2¹ = 744691691 is a prime.

Together with 744691691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744691691) 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, 372345846 + 372345847.

It is an arithmetic number, because the mean of its divisors is an integer number (372345847).

Almost surely, 2^744691693 is an apocalyptic number.

It is an amenable number.

744691693 is a deficient number, since it is larger than the sum of its proper divisors (1).

744691693 is an equidigital number, since it uses as much as digits as its factorization.

744691693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The square root of 744691693 is about 27289.0397962259. The cubic root of 744691693 is about 906.4117006873.

The spelling of 744691693 in words is "seven hundred forty-four million, six hundred ninety-one thousand, six hundred ninety-three".