9661688510 has 8 divisors (see below), whose sum is σ = 17391039336. Its totient is φ = 3864675400.

The previous prime is 9661688507. The next prime is 9661688513. The reversal of 9661688510 is 158861669.

9661688510 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9661688507) and next prime (9661688513).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661688513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483084416 + ... + 483084435.

It is an arithmetic number, because the mean of its divisors is an integer number (2173879917).

Almost surely, 2^9661688510 is an apocalyptic number.

9661688510 is a deficient number, since it is larger than the sum of its proper divisors (7729350826).

9661688510 is a wasteful number, since it uses less digits than its factorization.

9661688510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966168858.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 9661688510 is about 98293.8884671880. Note that the first 3 decimals coincide. The cubic root of 9661688510 is about 2129.8597709411.

The spelling of 9661688510 in words is "nine billion, six hundred sixty-one million, six hundred eighty-eight thousand, five hundred ten".