673400726 has 16 divisors (see below), whose sum is σ = 1039326288. Its totient is φ = 327045600.

The previous prime is 673400723. The next prime is 673400731. The reversal of 673400726 is 627004376.

It is a Smith number, since the sum of its digits (35) 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 not an unprimeable number, because it can be changed into a prime (673400723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6065 + ... + 37196.

It is an arithmetic number, because the mean of its divisors is an integer number (64957893).

Almost surely, 2^673400726 is an apocalyptic number.

673400726 is a deficient number, since it is larger than the sum of its proper divisors (365925562).

673400726 is a wasteful number, since it uses less digits than its factorization.

673400726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43487.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 673400726 is about 25949.9658188600. The cubic root of 673400726 is about 876.5119875979.

The spelling of 673400726 in words is "six hundred seventy-three million, four hundred thousand, seven hundred twenty-six".