674968121 has 2 divisors, whose sum is σ = 674968122. Its totient is φ = 674968120.

The previous prime is 674968087. The next prime is 674968139. The reversal of 674968121 is 121869476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595116025 + 79852096 = 24395^2 + 8936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674968121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (674968321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337484060 + 337484061.

It is an arithmetic number, because the mean of its divisors is an integer number (337484061).

Almost surely, 2^674968121 is an apocalyptic number.

It is an amenable number.

674968121 is a deficient number, since it is larger than the sum of its proper divisors (1).

674968121 is an equidigital number, since it uses as much as digits as its factorization.

674968121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 674968121 is about 25980.1485946482. The cubic root of 674968121 is about 877.1915116522.

The spelling of 674968121 in words is "six hundred seventy-four million, nine hundred sixty-eight thousand, one hundred twenty-one".