9661898 has 8 divisors (see below), whose sum is σ = 14523840. Its totient is φ = 4820620.

The previous prime is 9661889. The next prime is 9661913. The reversal of 9661898 is 8981669.

9661898 is nontrivially palindromic in base 7.

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

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938 + ... + 5901.

It is an arithmetic number, because the mean of its divisors is an integer number (1815480).

Almost surely, 2^9661898 is an apocalyptic number.

9661898 is a deficient number, since it is larger than the sum of its proper divisors (4861942).

9661898 is a wasteful number, since it uses less digits than its factorization.

9661898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332.

The product of its digits is 186624, while the sum is 47.

The square root of 9661898 is about 3108.3593743324. The cubic root of 9661898 is about 212.9875164424.

The spelling of 9661898 in words is "nine million, six hundred sixty-one thousand, eight hundred ninety-eight".