9886611690 has 24 divisors (see below), whose sum is σ = 25705190628. Its totient is φ = 2636429760.

The previous prime is 9886611673. The next prime is 9886611719. The reversal of 9886611690 is 961166889.

9886611690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9790904601 + 95707089 = 98949^2 + 9783^2 .

It is a super-2 number, since 2×9886611690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54925531 + ... + 54925710.

Almost surely, 2^9886611690 is an apocalyptic number.

9886611690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9886611690 is an abundant number, since it is smaller than the sum of its proper divisors (15818578938).

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

9886611690 is a wasteful number, since it uses less digits than its factorization.

9886611690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109851254 (or 109851251 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 9886611690 is about 99431.4421599124. The cubic root of 9886611690 is about 2146.2607939833.

The spelling of 9886611690 in words is "nine billion, eight hundred eighty-six million, six hundred eleven thousand, six hundred ninety".