9672710721 has 16 divisors (see below), whose sum is σ = 13382016960. Its totient is φ = 6207284160.

The previous prime is 9672710717. The next prime is 9672710753. The reversal of 9672710721 is 1270172769.

It is not a de Polignac number, because 9672710721 - 2² = 9672710717 is a prime.

It is a super-2 number, since 2×9672710721² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9672710701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139150 + ... + 196743.

It is an arithmetic number, because the mean of its divisors is an integer number (836376060).

Almost surely, 2^9672710721 is an apocalyptic number.

It is an amenable number.

9672710721 is a deficient number, since it is larger than the sum of its proper divisors (3709306239).

9672710721 is a wasteful number, since it uses less digits than its factorization.

9672710721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336256.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 9672710721 is about 98349.9401169111. The cubic root of 9672710721 is about 2130.6693893375.

The spelling of 9672710721 in words is "nine billion, six hundred seventy-two million, seven hundred ten thousand, seven hundred twenty-one".