674764789 has 2 divisors, whose sum is σ = 674764790. Its totient is φ = 674764788.

The previous prime is 674764781. The next prime is 674764801. The reversal of 674764789 is 987467476.

674764789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 569538225 + 105226564 = 23865^2 + 10258^2 .

It is a cyclic number.

It is not a de Polignac number, because 674764789 - 2³ = 674764781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674764781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337382394 + 337382395.

It is an arithmetic number, because the mean of its divisors is an integer number (337382395).

Almost surely, 2^674764789 is an apocalyptic number.

It is an amenable number.

674764789 is a deficient number, since it is larger than the sum of its proper divisors (1).

674764789 is an equidigital number, since it uses as much as digits as its factorization.

674764789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 58.

The square root of 674764789 is about 25976.2350813200. The cubic root of 674764789 is about 877.1034190879.

The spelling of 674764789 in words is "six hundred seventy-four million, seven hundred sixty-four thousand, seven hundred eighty-nine".