673129 has 2 divisors, whose sum is σ = 673130. Its totient is φ = 673128.

The previous prime is 673121. The next prime is 673157. The reversal of 673129 is 921376.

673129 is nontrivially palindromic in base 9.

It is an a-pointer prime, because the next prime (673157) can be obtained adding 673129 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 729 = 820^2 + 27^2 .

It is a cyclic number.

It is not a de Polignac number, because 673129 - 2³ = 673121 is a prime.

673129 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 673097 and 673106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336564 + 336565.

It is an arithmetic number, because the mean of its divisors is an integer number (336565).

2⁶⁷³¹²⁹ is an apocalyptic number.

It is an amenable number.

673129 is a deficient number, since it is larger than the sum of its proper divisors (1).

673129 is an equidigital number, since it uses as much as digits as its factorization.

673129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 28.

The square root of 673129 is about 820.4443917780. Note that the first 3 decimals coincide. The cubic root of 673129 is about 87.6394077053.

The spelling of 673129 in words is "six hundred seventy-three thousand, one hundred twenty-nine".