9890650 has 72 divisors (see below), whose sum is σ = 23409216. Its totient is φ = 3074400.

The previous prime is 9890623. The next prime is 9890663. The reversal of 9890650 is 560989.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26767 + ... + 27133.

It is an arithmetic number, because the mean of its divisors is an integer number (325128).

Almost surely, 2^9890650 is an apocalyptic number.

9890650 is an abundant number, since it is smaller than the sum of its proper divisors (13518566).

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

9890650 is a wasteful number, since it uses less digits than its factorization.

9890650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 9890650 is about 3144.9403809929. The cubic root of 9890650 is about 214.6552976546.

The spelling of 9890650 in words is "nine million, eight hundred ninety thousand, six hundred fifty".