9736644897 has 12 divisors (see below), whose sum is σ = 16073191680. Its totient is φ = 5563797048.

The previous prime is 9736644871. The next prime is 9736644913. The reversal of 9736644897 is 7984466379.

9736644897 is a `hidden beast` number, since 97 + 3 + 6 + 64 + 489 + 7 = 666.

9736644897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9736644897 - 2⁶ = 9736644833 is a prime.

It is a super-2 number, since 2×9736644897² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 154549919 = 9736644897 / (9 + 7 + 3 + 6 + 6 + 4 + 4 + 8 + 9 + 7).

It is not an unprimeable number, because it can be changed into a prime (9736644847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77274897 + ... + 77275022.

It is an arithmetic number, because the mean of its divisors is an integer number (1339432640).

Almost surely, 2^9736644897 is an apocalyptic number.

It is an amenable number.

9736644897 is a deficient number, since it is larger than the sum of its proper divisors (6336546783).

9736644897 is a wasteful number, since it uses less digits than its factorization.

9736644897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154549932 (or 154549929 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The square root of 9736644897 is about 98674.4389241712. The cubic root of 9736644897 is about 2135.3534798205.

The spelling of 9736644897 in words is "nine billion, seven hundred thirty-six million, six hundred forty-four thousand, eight hundred ninety-seven".