673993 has 4 divisors (see below), whose sum is σ = 680400. Its totient is φ = 667588.

The previous prime is 673991. The next prime is 674017. The reversal of 673993 is 399376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673993 - 2¹ = 673991 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 3043 + ... + 3256.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2⁶⁷³⁹⁹³ is an apocalyptic number.

It is an amenable number.

673993 is a deficient number, since it is larger than the sum of its proper divisors (6407).

673993 is a wasteful number, since it uses less digits than its factorization.

673993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406.

The product of its digits is 30618, while the sum is 37.

The square root of 673993 is about 820.9707668364. The cubic root of 673993 is about 87.6768884231.

The spelling of 673993 in words is "six hundred seventy-three thousand, nine hundred ninety-three".