9664690560 has 256 divisors, whose sum is σ = 36067852800. Its totient is φ = 2155069440.

The previous prime is 9664690549. The next prime is 9664690573. The reversal of 9664690560 is 650964669.

It is a super-2 number, since 2×9664690560² (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 31 ways as a sum of consecutive naturals, for example, 542271 + ... + 559809.

It is an arithmetic number, because the mean of its divisors is an integer number (140890050).

Almost surely, 2^9664690560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9664690560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18033926400).

9664690560 is an abundant number, since it is smaller than the sum of its proper divisors (26403162240).

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

9664690560 is a wasteful number, since it uses less digits than its factorization.

9664690560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17609 (or 17597 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The square root of 9664690560 is about 98309.1580678016. The cubic root of 9664690560 is about 2130.0803425799.

The spelling of 9664690560 in words is "nine billion, six hundred sixty-four million, six hundred ninety thousand, five hundred sixty".