726720488589 has 4 divisors (see below), whose sum is σ = 968960651456. Its totient is φ = 484480325724.

The previous prime is 726720488567. The next prime is 726720488657. The reversal of 726720488589 is 985884027627.

726720488589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 726720488589 - 2¹³ = 726720480397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726720488519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121120081429 + ... + 121120081434.

It is an arithmetic number, because the mean of its divisors is an integer number (242240162864).

Almost surely, 2^726720488589 is an apocalyptic number.

It is an amenable number.

726720488589 is a deficient number, since it is larger than the sum of its proper divisors (242240162867).

726720488589 is a wasteful number, since it uses less digits than its factorization.

726720488589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242240162866.

The product of its (nonzero) digits is 108380160, while the sum is 66.

The spelling of 726720488589 in words is "seven hundred twenty-six billion, seven hundred twenty million, four hundred eighty-eight thousand, five hundred eighty-nine".