9975566658 has 8 divisors (see below), whose sum is σ = 19951133328. Its totient is φ = 3325188884.

The previous prime is 9975566617. The next prime is 9975566677. The reversal of 9975566658 is 8566655799.

It is a sphenic number, since it is the product of 3 distinct primes.

9975566658 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831297216 + ... + 831297227.

It is an arithmetic number, because the mean of its divisors is an integer number (2493891666).

Almost surely, 2^9975566658 is an apocalyptic number.

9975566658 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9975566658 is a wasteful number, since it uses less digits than its factorization.

9975566658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662594448.

The product of its digits is 122472000, while the sum is 66.

The square root of 9975566658 is about 99877.7585751703. The cubic root of 9975566658 is about 2152.6785910222.

It can be divided in two parts, 997 and 5566658, that added together give a palindrome (5567655).

The spelling of 9975566658 in words is "nine billion, nine hundred seventy-five million, five hundred sixty-six thousand, six hundred fifty-eight".