9661304787 has 8 divisors (see below), whose sum is σ = 12909563904. Its totient is φ = 6426957768.

The previous prime is 9661304771. The next prime is 9661304791. The reversal of 9661304787 is 7874031669.

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

It is not a de Polignac number, because 9661304787 - 2⁴ = 9661304771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9661304797) 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, 3476403 + ... + 3479180.

It is an arithmetic number, because the mean of its divisors is an integer number (1613695488).

Almost surely, 2^9661304787 is an apocalyptic number.

9661304787 is a deficient number, since it is larger than the sum of its proper divisors (3248259117).

9661304787 is a wasteful number, since it uses less digits than its factorization.

9661304787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956049.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 9661304787 is about 98291.9365309281. The cubic root of 9661304787 is about 2129.8315741099.

The spelling of 9661304787 in words is "nine billion, six hundred sixty-one million, three hundred four thousand, seven hundred eighty-seven".