723008572865 has 8 divisors (see below), whose sum is σ = 867614956008. Its totient is φ = 578403745920.

The previous prime is 723008572861. The next prime is 723008572931. The reversal of 723008572865 is 568275800327.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1011685249 + 721996887616 = 31807^2 + 849704^2 .

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

It is not a de Polignac number, because 723008572865 - 2² = 723008572861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723008572861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298645 + ... + 1769885.

It is an arithmetic number, because the mean of its divisors is an integer number (108451869501).

Almost surely, 2^723008572865 is an apocalyptic number.

It is an amenable number.

723008572865 is a deficient number, since it is larger than the sum of its proper divisors (144606383143).

723008572865 is a wasteful number, since it uses less digits than its factorization.

723008572865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778099.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 723008572865 in words is "seven hundred twenty-three billion, eight million, five hundred seventy-two thousand, eight hundred sixty-five".