673805 has 8 divisors (see below), whose sum is σ = 882144. Its totient is φ = 490000.

The previous prime is 673801. The next prime is 673811. The reversal of 673805 is 508376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 673805 - 2² = 673801 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6071 + ... + 6180.

It is an arithmetic number, because the mean of its divisors is an integer number (110268).

2⁶⁷³⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

673805 is a deficient number, since it is larger than the sum of its proper divisors (208339).

673805 is a wasteful number, since it uses less digits than its factorization.

673805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12267.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 673805 is about 820.8562602551. The cubic root of 673805 is about 87.6687356243.

The spelling of 673805 in words is "six hundred seventy-three thousand, eight hundred five".