9646890 has 128 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 2112000.

The previous prime is 9646883. The next prime is 9646907. The reversal of 9646890 is 986469.

It is a nialpdrome in base 15.

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 63 ways as a sum of consecutive naturals, for example, 235270 + ... + 235310.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

Almost surely, 2^9646890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9646890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13934592).

9646890 is an abundant number, since it is smaller than the sum of its proper divisors (18222294).

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

9646890 is a wasteful number, since it uses less digits than its factorization.

9646890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 9646890 is about 3105.9443008528. The cubic root of 9646890 is about 212.8771801797.

The spelling of 9646890 in words is "nine million, six hundred forty-six thousand, eight hundred ninety".