674804549 has 2 divisors, whose sum is σ = 674804550. Its totient is φ = 674804548.

The previous prime is 674804531. The next prime is 674804561. The reversal of 674804549 is 945408476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630913924 + 43890625 = 25118^2 + 6625^2 .

It is a cyclic number.

It is not a de Polignac number, because 674804549 - 2⁸ = 674804293 is a prime.

It is a super-2 number, since 2×674804549² = 910722358702186802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674804569) 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, 337402274 + 337402275.

It is an arithmetic number, because the mean of its divisors is an integer number (337402275).

Almost surely, 2^674804549 is an apocalyptic number.

It is an amenable number.

674804549 is a deficient number, since it is larger than the sum of its proper divisors (1).

674804549 is an equidigital number, since it uses as much as digits as its factorization.

674804549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 674804549 is about 25977.0003849559. Note that the first 3 decimals coincide. The cubic root of 674804549 is about 877.1206462993.

The spelling of 674804549 in words is "six hundred seventy-four million, eight hundred four thousand, five hundred forty-nine".