9661683567 has 8 divisors (see below), whose sum is σ = 12905374896. Its totient is φ = 6429557312.

The previous prime is 9661683547. The next prime is 9661683569. The reversal of 9661683567 is 7653861669.

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

It is a cyclic number.

It is not a de Polignac number, because 9661683567 - 2⁶ = 9661683503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661683569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2889318 + ... + 2892659.

It is an arithmetic number, because the mean of its divisors is an integer number (1613171862).

Almost surely, 2^9661683567 is an apocalyptic number.

9661683567 is a deficient number, since it is larger than the sum of its proper divisors (3243691329).

9661683567 is a wasteful number, since it uses less digits than its factorization.

9661683567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782537.

The product of its digits is 9797760, while the sum is 57.

The square root of 9661683567 is about 98293.8633232004. The cubic root of 9661683567 is about 2129.8594077231.

The spelling of 9661683567 in words is "nine billion, six hundred sixty-one million, six hundred eighty-three thousand, five hundred sixty-seven".