9961698 has 8 divisors (see below), whose sum is σ = 19923408. Its totient is φ = 3320564.

The previous prime is 9961687. The next prime is 9961723. The reversal of 9961698 is 8961699.

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

9961698 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830136 + ... + 830147.

It is an arithmetic number, because the mean of its divisors is an integer number (2490426).

Almost surely, 2^9961698 is an apocalyptic number.

9961698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9961698 is a wasteful number, since it uses less digits than its factorization.

9961698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660288.

The product of its digits is 209952, while the sum is 48.

The square root of 9961698 is about 3156.2157720916. The cubic root of 9961698 is about 215.1680532125.

Subtracting from 9961698 its reverse (8961699), we obtain a palindrome (999999).

The spelling of 9961698 in words is "nine million, nine hundred sixty-one thousand, six hundred ninety-eight".