9666988858 has 32 divisors (see below), whose sum is σ = 14922144000. Its totient is φ = 4694667264.

The previous prime is 9666988831. The next prime is 9666988873. The reversal of 9666988858 is 8588896669.

It is a super-2 number, since 2×9666988858² (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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9580258 + ... + 9581266.

It is an arithmetic number, because the mean of its divisors is an integer number (466317000).

Almost surely, 2^9666988858 is an apocalyptic number.

9666988858 is a deficient number, since it is larger than the sum of its proper divisors (5255155142).

9666988858 is a wasteful number, since it uses less digits than its factorization.

9666988858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its digits is 358318080, while the sum is 73.

The square root of 9666988858 is about 98320.8465077473. The cubic root of 9666988858 is about 2130.2491761069.

The spelling of 9666988858 in words is "nine billion, six hundred sixty-six million, nine hundred eighty-eight thousand, eight hundred fifty-eight".