9985690 has 32 divisors (see below), whose sum is σ = 21119616. Its totient is φ = 3351360.

The previous prime is 9985669. The next prime is 9985693. The reversal of 9985690 is 965899.

It is a happy number.

9985690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×9985690⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 9985690.

It is not an unprimeable number, because it can be changed into a prime (9985693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (659988).

Almost surely, 2^9985690 is an apocalyptic number.

9985690 is an abundant number, since it is smaller than the sum of its proper divisors (11133926).

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

9985690 is a wasteful number, since it uses less digits than its factorization.

9985690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 9985690 is about 3160.0142404742. The cubic root of 9985690 is about 215.3406534098.

The spelling of 9985690 in words is "nine million, nine hundred eighty-five thousand, six hundred ninety".