673999 has 8 divisors (see below), whose sum is σ = 731808. Its totient is φ = 618240.

The previous prime is 673991. The next prime is 674017. The reversal of 673999 is 999376.

673999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 673999 - 2³ = 673991 is a prime.

It is a Duffinian number.

673999 is a modest number, since divided by 999 gives 673 as remainder.

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 (673991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (91476).

2⁶⁷³⁹⁹⁹ is an apocalyptic number.

673999 is a deficient number, since it is larger than the sum of its proper divisors (57809).

673999 is a wasteful number, since it uses less digits than its factorization.

673999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 91854, while the sum is 43.

The square root of 673999 is about 820.9744210388. The cubic root of 673999 is about 87.6771485938.

The spelling of 673999 in words is "six hundred seventy-three thousand, nine hundred ninety-nine".