674133809 has 2 divisors, whose sum is σ = 674133810. Its totient is φ = 674133808.

The previous prime is 674133799. The next prime is 674133829. The reversal of 674133809 is 908331476.

674133809 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., 670965409 + 3168400 = 25903^2 + 1780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674133809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (674133829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337066904 + 337066905.

It is an arithmetic number, because the mean of its divisors is an integer number (337066905).

Almost surely, 2^674133809 is an apocalyptic number.

It is an amenable number.

674133809 is a deficient number, since it is larger than the sum of its proper divisors (1).

674133809 is an equidigital number, since it uses as much as digits as its factorization.

674133809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 674133809 is about 25964.0869086513. The cubic root of 674133809 is about 876.8299374631.

The spelling of 674133809 in words is "six hundred seventy-four million, one hundred thirty-three thousand, eight hundred nine".