9805664622 has 96 divisors (see below), whose sum is σ = 22079361024. Its totient is φ = 2882995200.

The previous prime is 9805664597. The next prime is 9805664633. The reversal of 9805664622 is 2264665089.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22750747 + ... + 22751177.

It is an arithmetic number, because the mean of its divisors is an integer number (229993344).

Almost surely, 2^9805664622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9805664622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11039680512).

9805664622 is an abundant number, since it is smaller than the sum of its proper divisors (12273696402).

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

9805664622 is a wasteful number, since it uses less digits than its factorization.

9805664622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 9805664622 is about 99023.5558945446. Note that the first 3 decimals coincide. The cubic root of 9805664622 is about 2140.3871997141.

The spelling of 9805664622 in words is "nine billion, eight hundred five million, six hundred sixty-four thousand, six hundred twenty-two".