9868690 has 16 divisors (see below), whose sum is σ = 19130328. Its totient is φ = 3643776.

The previous prime is 9868643. The next prime is 9868693. The reversal of 9868690 is 968689.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7469289 + 2399401 = 2733^2 + 1549^2 .

It is a super-2 number, since 2×9868690² = 194782084632200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9868690.

It is not an unprimeable number, because it can be changed into a prime (9868693) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 37827 + ... + 38086.

Almost surely, 2^9868690 is an apocalyptic number.

9868690 is a deficient number, since it is larger than the sum of its proper divisors (9261638).

9868690 is a wasteful number, since it uses less digits than its factorization.

9868690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75933.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 9868690 is about 3141.4471187655. The cubic root of 9868690 is about 214.4963150694.

The spelling of 9868690 in words is "nine million, eight hundred sixty-eight thousand, six hundred ninety".