9609661787 has 8 divisors (see below), whose sum is σ = 11035018560. Its totient is φ = 8276263560.

The previous prime is 9609661781. The next prime is 9609661799. The reversal of 9609661787 is 7871669069.

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 9609661787 - 2⁴ = 9609661771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9609661781) 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, 22989413 + ... + 22989830.

It is an arithmetic number, because the mean of its divisors is an integer number (1379377320).

Almost surely, 2^9609661787 is an apocalyptic number.

9609661787 is a deficient number, since it is larger than the sum of its proper divisors (1425356773).

9609661787 is a wasteful number, since it uses less digits than its factorization.

9609661787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45979273.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 9609661787 is about 98028.8824122768. The cubic root of 9609661787 is about 2126.0298979661.

The spelling of 9609661787 in words is "nine billion, six hundred nine million, six hundred sixty-one thousand, seven hundred eighty-seven".