9867885556 has 6 divisors (see below), whose sum is σ = 17268799730. Its totient is φ = 4933942776.

The previous prime is 9867885541. The next prime is 9867885557. The reversal of 9867885556 is 6555887689.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9794269156 + 73616400 = 98966^2 + 8580^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9867885491 and 9867885500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9867885557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1233485691 + ... + 1233485698.

Almost surely, 2^9867885556 is an apocalyptic number.

It is an amenable number.

9867885556 is a deficient number, since it is larger than the sum of its proper divisors (7400914174).

9867885556 is a wasteful number, since it uses less digits than its factorization.

9867885556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466971393 (or 2466971391 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 67.

The square root of 9867885556 is about 99337.2314693741. The cubic root of 9867885556 is about 2144.9048670504.

The spelling of 9867885556 in words is "nine billion, eight hundred sixty-seven million, eight hundred eighty-five thousand, five hundred fifty-six".