726803563 has 4 divisors (see below), whose sum is σ = 726889240. Its totient is φ = 726717888.

The previous prime is 726803557. The next prime is 726803591. The reversal of 726803563 is 365308627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365308627 = 541 ⋅675247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726803563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726803503) 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, 28518 + ... + 47611.

It is an arithmetic number, because the mean of its divisors is an integer number (181722310).

Almost surely, 2^726803563 is an apocalyptic number.

726803563 is a deficient number, since it is larger than the sum of its proper divisors (85677).

726803563 is an equidigital number, since it uses as much as digits as its factorization.

726803563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85676.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 726803563 is about 26959.2945567943. The cubic root of 726803563 is about 899.0952071545.

The spelling of 726803563 in words is "seven hundred twenty-six million, eight hundred three thousand, five hundred sixty-three".