9666535001 has 4 divisors (see below), whose sum is σ = 9666980004. Its totient is φ = 9666090000.

The previous prime is 9666534961. The next prime is 9666535003. The reversal of 9666535001 is 1005356669.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9545094601 + 121440400 = 97699^2 + 11020^2 .

It is a cyclic number.

It is not a de Polignac number, because 9666535001 - 2¹⁰ = 9666533977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9666535001.

It is not an unprimeable number, because it can be changed into a prime (9666535003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188150 + ... + 233951.

It is an arithmetic number, because the mean of its divisors is an integer number (2416745001).

Almost surely, 2^9666535001 is an apocalyptic number.

It is an amenable number.

9666535001 is a deficient number, since it is larger than the sum of its proper divisors (445003).

9666535001 is a wasteful number, since it uses less digits than its factorization.

9666535001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445002.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 9666535001 is about 98318.5384401131. The cubic root of 9666535001 is about 2130.2158377825.

The spelling of 9666535001 in words is "nine billion, six hundred sixty-six million, five hundred thirty-five thousand, one".