723448673 has 4 divisors (see below), whose sum is σ = 723902148. Its totient is φ = 722995200.

The previous prime is 723448657. The next prime is 723448709. The reversal of 723448673 is 376844327.

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

It can be written as a sum of positive squares in 2 ways, for example, as 721620769 + 1827904 = 26863^2 + 1352^2 .

It is a cyclic number.

It is not a de Polignac number, because 723448673 - 2⁴ = 723448657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723448603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224336 + ... + 227537.

It is an arithmetic number, because the mean of its divisors is an integer number (180975537).

Almost surely, 2^723448673 is an apocalyptic number.

It is an amenable number.

723448673 is a deficient number, since it is larger than the sum of its proper divisors (453475).

723448673 is a wasteful number, since it uses less digits than its factorization.

723448673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453474.

The product of its digits is 677376, while the sum is 44.

The square root of 723448673 is about 26897.0011897237. The cubic root of 723448673 is about 897.7096798290.

The spelling of 723448673 in words is "seven hundred twenty-three million, four hundred forty-eight thousand, six hundred seventy-three".