9668198401 has 4 divisors (see below), whose sum is σ = 10236915972. Its totient is φ = 9099480832.

The previous prime is 9668198399. The next prime is 9668198413. The reversal of 9668198401 is 1048918669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1048918669 = 2137 ⋅490837.

It can be written as a sum of positive squares in 2 ways, for example, as 6237050625 + 3431147776 = 78975^2 + 58576^2 .

It is a cyclic number.

It is not a de Polignac number, because 9668198401 - 2¹ = 9668198399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9668198471) 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, 284358760 + ... + 284358793.

It is an arithmetic number, because the mean of its divisors is an integer number (2559228993).

Almost surely, 2^9668198401 is an apocalyptic number.

It is an amenable number.

9668198401 is a deficient number, since it is larger than the sum of its proper divisors (568717571).

9668198401 is a wasteful number, since it uses less digits than its factorization.

9668198401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568717570.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 9668198401 is about 98326.9973150813. The cubic root of 9668198401 is about 2130.3380186810.

The spelling of 9668198401 in words is "nine billion, six hundred sixty-eight million, one hundred ninety-eight thousand, four hundred one".