671369 has 2 divisors, whose sum is σ = 671370. Its totient is φ = 671368.

The previous prime is 671357. The next prime is 671383. The reversal of 671369 is 963176.

671369 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., 473344 + 198025 = 688^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 671369 - 2⁴ = 671353 is a prime.

It is a super-2 number, since 2×671369² = 901472668322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (671339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335684 + 335685.

It is an arithmetic number, because the mean of its divisors is an integer number (335685).

2⁶⁷¹³⁶⁹ is an apocalyptic number.

It is an amenable number.

671369 is a deficient number, since it is larger than the sum of its proper divisors (1).

671369 is an equidigital number, since it uses as much as digits as its factorization.

671369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 671369 is about 819.3711002958. The cubic root of 671369 is about 87.5629587701.

The spelling of 671369 in words is "six hundred seventy-one thousand, three hundred sixty-nine".