720726735 has 32 divisors (see below), whose sum is σ = 1207065600. Its totient is φ = 366524928.

The previous prime is 720726733. The next prime is 720726739. The reversal of 720726735 is 537627027.

It is not a de Polignac number, because 720726735 - 2¹ = 720726733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720726693 and 720726702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720726733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113166 + ... + 119364.

It is an arithmetic number, because the mean of its divisors is an integer number (37720800).

Almost surely, 2^720726735 is an apocalyptic number.

720726735 is a deficient number, since it is larger than the sum of its proper divisors (486338865).

720726735 is a wasteful number, since it uses less digits than its factorization.

720726735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567.

The product of its (nonzero) digits is 123480, while the sum is 39.

The square root of 720726735 is about 26846.3542217561. The cubic root of 720726735 is about 896.5824028799.

The spelling of 720726735 in words is "seven hundred twenty million, seven hundred twenty-six thousand, seven hundred thirty-five".