673899 has 4 divisors (see below), whose sum is σ = 898536. Its totient is φ = 449264.

The previous prime is 673891. The next prime is 673921. The reversal of 673899 is 998376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 673899 - 2³ = 673891 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 673899.

It is not an unprimeable number, because it can be changed into a prime (673891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112314 + ... + 112319.

It is an arithmetic number, because the mean of its divisors is an integer number (224634).

2⁶⁷³⁸⁹⁹ is an apocalyptic number.

673899 is a deficient number, since it is larger than the sum of its proper divisors (224637).

673899 is a wasteful number, since it uses less digits than its factorization.

673899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224636.

The product of its digits is 81648, while the sum is 42.

The square root of 673899 is about 820.9135155423. The cubic root of 673899 is about 87.6728122133.

The spelling of 673899 in words is "six hundred seventy-three thousand, eight hundred ninety-nine".