673836 has 24 divisors (see below), whose sum is σ = 1585584. Its totient is φ = 222720.

The previous prime is 673817. The next prime is 673837. The reversal of 673836 is 638376.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 673797 and 673806.

It is not an unprimeable number, because it can be changed into a prime (673837) by changing a digit.

673836 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 2676 + ... + 2916.

It is an arithmetic number, because the mean of its divisors is an integer number (66066).

2⁶⁷³⁸³⁶ is an apocalyptic number.

It is an amenable number.

673836 is an abundant number, since it is smaller than the sum of its proper divisors (911748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673836 is a wasteful number, since it uses less digits than its factorization.

673836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 479 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 673836 is about 820.8751427592. The cubic root of 673836 is about 87.6700800732.

The spelling of 673836 in words is "six hundred seventy-three thousand, eight hundred thirty-six".