9816656766 has 48 divisors (see below), whose sum is σ = 24182220816. Its totient is φ = 2639771904.

The previous prime is 9816656747. The next prime is 9816656779. The reversal of 9816656766 is 6676566189.

It is a super-2 number, since 2×9816656766² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 977061 + ... + 987056.

It is an arithmetic number, because the mean of its divisors is an integer number (503796267).

Almost surely, 2^9816656766 is an apocalyptic number.

9816656766 is an abundant number, since it is smaller than the sum of its proper divisors (14365564050).

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

9816656766 is a wasteful number, since it uses less digits than its factorization.

9816656766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964153 (or 1964146 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The square root of 9816656766 is about 99079.0430212161. The cubic root of 9816656766 is about 2141.1866919558.

The spelling of 9816656766 in words is "nine billion, eight hundred sixteen million, six hundred fifty-six thousand, seven hundred sixty-six".