674073809 has 2 divisors, whose sum is σ = 674073810. Its totient is φ = 674073808.

The previous prime is 674073791. The next prime is 674073853. The reversal of 674073809 is 908370476.

It is an a-pointer prime, because the next prime (674073853) can be obtained adding 674073809 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373571584 + 300502225 = 19328^2 + 17335^2 .

It is a cyclic number.

It is not a de Polignac number, because 674073809 - 2⁸ = 674073553 is a prime.

It is equal to p_34978832 and since 674073809 and 34978832 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674073809.

It is not a weakly prime, because it can be changed into another prime (674043809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337036904 + 337036905.

It is an arithmetic number, because the mean of its divisors is an integer number (337036905).

Almost surely, 2^674073809 is an apocalyptic number.

It is an amenable number.

674073809 is a deficient number, since it is larger than the sum of its proper divisors (1).

674073809 is an equidigital number, since it uses as much as digits as its factorization.

674073809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 674073809 is about 25962.9314408061. The cubic root of 674073809 is about 876.8039231632.

The spelling of 674073809 in words is "six hundred seventy-four million, seventy-three thousand, eight hundred nine".