674161 has 2 divisors, whose sum is σ = 674162. Its totient is φ = 674160.

The previous prime is 674159. The next prime is 674173. The reversal of 674161 is 161476.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 295936 = 615^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 674161 - 2¹ = 674159 is a prime.

Together with 674159, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (674131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337080 + 337081.

It is an arithmetic number, because the mean of its divisors is an integer number (337081).

2⁶⁷⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

674161 is a deficient number, since it is larger than the sum of its proper divisors (1).

674161 is an equidigital number, since it uses as much as digits as its factorization.

674161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 674161 is about 821.0730783554. The cubic root of 674161 is about 87.6841726202.

The spelling of 674161 in words is "six hundred seventy-four thousand, one hundred sixty-one".