723044345 has 8 divisors (see below), whose sum is σ = 869716680. Its totient is φ = 577059840.

The previous prime is 723044339. The next prime is 723044359. The reversal of 723044345 is 543440327.

It can be written as a sum of positive squares in 4 ways, for example, as 45535504 + 677508841 = 6748^2 + 26029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 723044345 - 2⁶ = 723044281 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 169640 + ... + 173849.

It is an arithmetic number, because the mean of its divisors is an integer number (108714585).

Almost surely, 2^723044345 is an apocalyptic number.

It is an amenable number.

723044345 is a deficient number, since it is larger than the sum of its proper divisors (146672335).

723044345 is a wasteful number, since it uses less digits than its factorization.

723044345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343915.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 723044345 is about 26889.4839110013. The cubic root of 723044345 is about 897.5424084367.

The spelling of 723044345 in words is "seven hundred twenty-three million, forty-four thousand, three hundred forty-five".