726807563 has 4 divisors (see below), whose sum is σ = 728964600. Its totient is φ = 724650528.

The previous prime is 726807527. The next prime is 726807581. The reversal of 726807563 is 365708627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365708627 = 223 ⋅1639949.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726807563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726807503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078013 + ... + 1078686.

It is an arithmetic number, because the mean of its divisors is an integer number (182241150).

Almost surely, 2^726807563 is an apocalyptic number.

726807563 is a deficient number, since it is larger than the sum of its proper divisors (2157037).

726807563 is a wasteful number, since it uses less digits than its factorization.

726807563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157036.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 726807563 is about 26959.3687426097. The cubic root of 726807563 is about 899.0968565567.

The spelling of 726807563 in words is "seven hundred twenty-six million, eight hundred seven thousand, five hundred sixty-three".