673865 has 8 divisors (see below), whose sum is σ = 813120. Its totient is φ = 536112.

The previous prime is 673837. The next prime is 673879. The reversal of 673865 is 568376.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 673865 - 2⁶ = 673801 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673865.

It is an unprimeable number.

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, 1316 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (101640).

2⁶⁷³⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

673865 is a deficient number, since it is larger than the sum of its proper divisors (139255).

673865 is a wasteful number, since it uses less digits than its factorization.

673865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its digits is 30240, while the sum is 35.

The square root of 673865 is about 820.8928066441. The cubic root of 673865 is about 87.6713377461.

The spelling of 673865 in words is "six hundred seventy-three thousand, eight hundred sixty-five".