9603541665 has 24 divisors (see below), whose sum is σ = 16653754728. Its totient is φ = 5119545600.

The previous prime is 9603541663. The next prime is 9603541667. The reversal of 9603541665 is 5661453069.

9603541665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9603541663) and next prime (9603541667).

It can be written as a sum of positive squares in 4 ways, for example, as 589178529 + 9014363136 = 24273^2 + 94944^2 .

It is not a de Polignac number, because 9603541665 - 2¹ = 9603541663 is a prime.

It is a super-2 number, since 2×9603541665² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9603541665.

It is not an unprimeable number, because it can be changed into a prime (9603541663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52965 + ... + 148365.

It is an arithmetic number, because the mean of its divisors is an integer number (693906447).

Almost surely, 2^9603541665 is an apocalyptic number.

It is an amenable number.

9603541665 is a deficient number, since it is larger than the sum of its proper divisors (7050213063).

9603541665 is a wasteful number, since it uses less digits than its factorization.

9603541665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97649 (or 97646 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 9603541665 is about 97997.6615282222. The cubic root of 9603541665 is about 2125.5784659994.

The spelling of 9603541665 in words is "nine billion, six hundred three million, five hundred forty-one thousand, six hundred sixty-five".