726573903 has 12 divisors (see below), whose sum is σ = 1064841624. Its totient is φ = 440347600.

The previous prime is 726573821. The next prime is 726573907. The reversal of 726573903 is 309375627.

It is a happy number.

It is not a de Polignac number, because 726573903 - 2⁹ = 726573391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726573907) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1000428 + ... + 1001153.

It is an arithmetic number, because the mean of its divisors is an integer number (88736802).

Almost surely, 2^726573903 is an apocalyptic number.

726573903 is a deficient number, since it is larger than the sum of its proper divisors (338267721).

726573903 is a wasteful number, since it uses less digits than its factorization.

726573903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001606 (or 2001595 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 42.

The square root of 726573903 is about 26955.0348358150. The cubic root of 726573903 is about 899.0004965759. Note that the first 3 decimals are identical.

The spelling of 726573903 in words is "seven hundred twenty-six million, five hundred seventy-three thousand, nine hundred three".