9657890 has 32 divisors (see below), whose sum is σ = 19967040. Its totient is φ = 3326400.

The previous prime is 9657881. The next prime is 9657937. The reversal of 9657890 is 987569.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221 + ... + 4400.

It is an arithmetic number, because the mean of its divisors is an integer number (623970).

Almost surely, 2^9657890 is an apocalyptic number.

9657890 is an abundant number, since it is smaller than the sum of its proper divisors (10309150).

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

9657890 is a wasteful number, since it uses less digits than its factorization.

9657890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 9657890 is about 3107.7145943603. The cubic root of 9657890 is about 212.9580614970.

The spelling of 9657890 in words is "nine million, six hundred fifty-seven thousand, eight hundred ninety".