9725717 has 12 divisors (see below), whose sum is σ = 10495716. Its totient is φ = 9008640.

The previous prime is 9725713. The next prime is 9725731. The reversal of 9725717 is 7175279.

It can be written as a sum of positive squares in 6 ways, for example, as 538756 + 9186961 = 734^2 + 3031^2 .

It is not a de Polignac number, because 9725717 - 2² = 9725713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725713) 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 11 ways as a sum of consecutive naturals, for example, 20867 + ... + 21327.

It is an arithmetic number, because the mean of its divisors is an integer number (874643).

Almost surely, 2^9725717 is an apocalyptic number.

It is an amenable number.

9725717 is a deficient number, since it is larger than the sum of its proper divisors (769999).

9725717 is a wasteful number, since it uses less digits than its factorization.

9725717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 551 counting only the distinct ones).

The product of its digits is 30870, while the sum is 38.

The square root of 9725717 is about 3118.6081831484. The cubic root of 9725717 is about 213.4554311368.

The spelling of 9725717 in words is "nine million, seven hundred twenty-five thousand, seven hundred seventeen".