9969698 has 4 divisors (see below), whose sum is σ = 14954550. Its totient is φ = 4984848.

The previous prime is 9969697. The next prime is 9969703. The reversal of 9969698 is 8969699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8969699 = 463 ⋅19373.

It can be written as a sum of positive squares in only one way, i.e., 5230369 + 4739329 = 2287^2 + 2177^2 .

It is a super-2 number, since 2×9969698² = 198789756422408, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9969697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492423 + ... + 2492426.

Almost surely, 2^9969698 is an apocalyptic number.

9969698 is a deficient number, since it is larger than the sum of its proper divisors (4984852).

9969698 is a wasteful number, since it uses less digits than its factorization.

9969698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984851.

The product of its digits is 1889568, while the sum is 56.

The square root of 9969698 is about 3157.4828582274. The cubic root of 9969698 is about 215.2256365629.

Subtracting from 9969698 its reverse (8969699), we obtain a palindrome (999999).

The spelling of 9969698 in words is "nine million, nine hundred sixty-nine thousand, six hundred ninety-eight".