674066321 has 2 divisors, whose sum is σ = 674066322. Its totient is φ = 674066320.

The previous prime is 674066311. The next prime is 674066347. The reversal of 674066321 is 123660476.

674066321 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., 434931025 + 239135296 = 20855^2 + 15464^2 .

It is a cyclic number.

It is not a de Polignac number, because 674066321 - 2²⁶ = 606957457 is a prime.

It is not a weakly prime, because it can be changed into another prime (674066311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337033160 + 337033161.

It is an arithmetic number, because the mean of its divisors is an integer number (337033161).

Almost surely, 2^674066321 is an apocalyptic number.

It is an amenable number.

674066321 is a deficient number, since it is larger than the sum of its proper divisors (1).

674066321 is an equidigital number, since it uses as much as digits as its factorization.

674066321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 674066321 is about 25962.7872348097. The cubic root of 674066321 is about 876.8006764702.

The spelling of 674066321 in words is "six hundred seventy-four million, sixty-six thousand, three hundred twenty-one".