9997348661 has 8 divisors (see below), whose sum is σ = 10586422080. Its totient is φ = 9408385728.

The previous prime is 9997348609. The next prime is 9997348721. The reversal of 9997348661 is 1668437999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9997348661 - 2¹⁰ = 9997347637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9997348594 and 9997348603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997348261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224510 + ... + 265328.

It is an arithmetic number, because the mean of its divisors is an integer number (1323302760).

Almost surely, 2^9997348661 is an apocalyptic number.

It is an amenable number.

9997348661 is a deficient number, since it is larger than the sum of its proper divisors (589073419).

9997348661 is a wasteful number, since it uses less digits than its factorization.

9997348661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55243.

The product of its digits is 17635968, while the sum is 62.

The square root of 9997348661 is about 99986.7424261837. The cubic root of 9997348661 is about 2154.2442686446.

The spelling of 9997348661 in words is "nine billion, nine hundred ninety-seven million, three hundred forty-eight thousand, six hundred sixty-one".