673726 has 4 divisors (see below), whose sum is σ = 1010592. Its totient is φ = 336862.

The previous prime is 673669. The next prime is 673747. The reversal of 673726 is 627376.

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

It is a super-3 number, since 3×673726³ = 917426282733303528, which contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168430 + ... + 168433.

It is an arithmetic number, because the mean of its divisors is an integer number (252648).

2⁶⁷³⁷²⁶ is an apocalyptic number.

673726 is a deficient number, since it is larger than the sum of its proper divisors (336866).

673726 is a wasteful number, since it uses less digits than its factorization.

673726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336865.

The product of its digits is 10584, while the sum is 31.

The square root of 673726 is about 820.8081383612. The cubic root of 673726 is about 87.6653092617.

The spelling of 673726 in words is "six hundred seventy-three thousand, seven hundred twenty-six".