9576721 has 16 divisors (see below), whose sum is σ = 12009600. Its totient is φ = 7418880.

The previous prime is 9576709. The next prime is 9576727. The reversal of 9576721 is 1276759.

It is not a de Polignac number, because 9576721 - 2¹¹ = 9574673 is a prime.

It is a super-2 number, since 2×9576721² = 183427170223682, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9576727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21105 + ... + 21553.

It is an arithmetic number, because the mean of its divisors is an integer number (750600).

Almost surely, 2^9576721 is an apocalyptic number.

It is an amenable number.

9576721 is a deficient number, since it is larger than the sum of its proper divisors (2432879).

9576721 is a wasteful number, since it uses less digits than its factorization.

9576721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its digits is 26460, while the sum is 37.

The square root of 9576721 is about 3094.6277643684. The cubic root of 9576721 is about 212.3597857032.

The spelling of 9576721 in words is "nine million, five hundred seventy-six thousand, seven hundred twenty-one".