9997646693 has 16 divisors (see below), whose sum is σ = 10575242496. Its totient is φ = 9432698880.

The previous prime is 9997646683. The next prime is 9997646707. The reversal of 9997646693 is 3966467999.

It is a cyclic number.

It is not a de Polignac number, because 9997646693 - 2⁸ = 9997646437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997646623) 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, 600623 + ... + 617043.

It is an arithmetic number, because the mean of its divisors is an integer number (660952656).

Almost surely, 2^9997646693 is an apocalyptic number.

It is an amenable number.

9997646693 is a deficient number, since it is larger than the sum of its proper divisors (577595803).

9997646693 is a wasteful number, since it uses less digits than its factorization.

9997646693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16804.

The product of its digits is 119042784, while the sum is 68.

The square root of 9997646693 is about 99988.2327726618. The cubic root of 9997646693 is about 2154.2656752318.

The spelling of 9997646693 in words is "nine billion, nine hundred ninety-seven million, six hundred forty-six thousand, six hundred ninety-three".