673399 has 2 divisors, whose sum is σ = 673400. Its totient is φ = 673398.

The previous prime is 673397. The next prime is 673403. The reversal of 673399 is 993376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673399 - 2¹ = 673397 is a prime.

Together with 673397, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336699 + 336700.

It is an arithmetic number, because the mean of its divisors is an integer number (336700).

2⁶⁷³³⁹⁹ is an apocalyptic number.

673399 is a deficient number, since it is larger than the sum of its proper divisors (1).

673399 is an equidigital number, since it uses as much as digits as its factorization.

673399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 37.

The square root of 673399 is about 820.6089202537. The cubic root of 673399 is about 87.6511238732.

The spelling of 673399 in words is "six hundred seventy-three thousand, three hundred ninety-nine".