673866 has 16 divisors (see below), whose sum is σ = 1497600. Its totient is φ = 224604.

The previous prime is 673837. The next prime is 673879. The reversal of 673866 is 668376.

It is a happy number.

673866 is nontrivially palindromic in base 16.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 673866.

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, 6186 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (93600).

2⁶⁷³⁸⁶⁶ is an apocalyptic number.

673866 is an abundant number, since it is smaller than the sum of its proper divisors (823734).

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

673866 is a wasteful number, since it uses less digits than its factorization.

673866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12490 (or 12484 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 673866 is about 820.8934157368. The cubic root of 673866 is about 87.6713811135.

The spelling of 673866 in words is "six hundred seventy-three thousand, eight hundred sixty-six".