673549 has 2 divisors, whose sum is σ = 673550. Its totient is φ = 673548.

The previous prime is 673529. The next prime is 673553. The reversal of 673549 is 945376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 260100 = 643^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 673549 - 2¹¹ = 671501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336774 + 336775.

It is an arithmetic number, because the mean of its divisors is an integer number (336775).

2⁶⁷³⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

673549 is a deficient number, since it is larger than the sum of its proper divisors (1).

673549 is an equidigital number, since it uses as much as digits as its factorization.

673549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 673549 is about 820.7003107103. The cubic root of 673549 is about 87.6576315021.

The spelling of 673549 in words is "six hundred seventy-three thousand, five hundred forty-nine".