774640613 has 2 divisors, whose sum is σ = 774640614. Its totient is φ = 774640612.

The previous prime is 774640589. The next prime is 774640637. The reversal of 774640613 is 316046477.

774640613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (774640589) and next prime (774640637).

It can be written as a sum of positive squares in only one way, i.e., 774119329 + 521284 = 27823^2 + 722^2 .

It is an emirp because it is prime and its reverse (316046477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774640613 - 2⁶ = 774640549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (774640213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387320306 + 387320307.

It is an arithmetic number, because the mean of its divisors is an integer number (387320307).

Almost surely, 2^774640613 is an apocalyptic number.

It is an amenable number.

774640613 is a deficient number, since it is larger than the sum of its proper divisors (1).

774640613 is an equidigital number, since it uses as much as digits as its factorization.

774640613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 774640613 is about 27832.3662845975. The cubic root of 774640613 is about 918.4032688690.

The spelling of 774640613 in words is "seven hundred seventy-four million, six hundred forty thousand, six hundred thirteen".