726731013 has 16 divisors (see below), whose sum is σ = 988891200. Its totient is φ = 474629760.

The previous prime is 726730993. The next prime is 726731017. The reversal of 726731013 is 310137627.

It is not a de Polignac number, because 726731013 - 2¹⁶ = 726665477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726731017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16618 + ... + 41588.

It is an arithmetic number, because the mean of its divisors is an integer number (61805700).

Almost surely, 2^726731013 is an apocalyptic number.

It is an amenable number.

726731013 is a deficient number, since it is larger than the sum of its proper divisors (262160187).

726731013 is a wasteful number, since it uses less digits than its factorization.

726731013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25172.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 726731013 is about 26957.9489761369. The cubic root of 726731013 is about 899.0652900714.

The spelling of 726731013 in words is "seven hundred twenty-six million, seven hundred thirty-one thousand, thirteen".