9579798681 has 4 divisors (see below), whose sum is σ = 12773064912. Its totient is φ = 6386532452.

The previous prime is 9579798661. The next prime is 9579798691. The reversal of 9579798681 is 1868979759.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9579798681 - 2⁹ = 9579798169 is a prime.

It is a super-2 number, since 2×9579798681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9579798661) 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 3 ways as a sum of consecutive naturals, for example, 1596633111 + ... + 1596633116.

It is an arithmetic number, because the mean of its divisors is an integer number (3193266228).

Almost surely, 2^9579798681 is an apocalyptic number.

It is an amenable number.

9579798681 is a deficient number, since it is larger than the sum of its proper divisors (3193266231).

9579798681 is a wasteful number, since it uses less digits than its factorization.

9579798681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193266230.

The product of its digits is 68584320, while the sum is 69.

The square root of 9579798681 is about 97876.4459969813. The cubic root of 9579798681 is about 2123.8253202997.

The spelling of 9579798681 in words is "nine billion, five hundred seventy-nine million, seven hundred ninety-eight thousand, six hundred eighty-one".