9866684552 has 8 divisors (see below), whose sum is σ = 18500033550. Its totient is φ = 4933342272.

The previous prime is 9866684501. The next prime is 9866684567. The reversal of 9866684552 is 2554866689.

It can be written as a sum of positive squares in only one way, i.e., 5128564996 + 4738119556 = 71614^2 + 68834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 9866684491 and 9866684500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616667777 + ... + 616667792.

Almost surely, 2^9866684552 is an apocalyptic number.

It is an amenable number.

9866684552 is a deficient number, since it is larger than the sum of its proper divisors (8633348998).

9866684552 is a wasteful number, since it uses less digits than its factorization.

9866684552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233335575 (or 1233335571 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 59.

The square root of 9866684552 is about 99331.1862005080. The cubic root of 9866684552 is about 2144.8178459142.

The spelling of 9866684552 in words is "nine billion, eight hundred sixty-six million, six hundred eighty-four thousand, five hundred fifty-two".