9660961787 has 24 divisors (see below), whose sum is σ = 10347240672. Its totient is φ = 9017856000.

The previous prime is 9660961771. The next prime is 9660961789. The reversal of 9660961787 is 7871690669.

It is not a de Polignac number, because 9660961787 - 2⁴ = 9660961771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9660961789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9369962 + ... + 9370992.

It is an arithmetic number, because the mean of its divisors is an integer number (431135028).

Almost surely, 2^9660961787 is an apocalyptic number.

9660961787 is a deficient number, since it is larger than the sum of its proper divisors (686278885).

9660961787 is a wasteful number, since it uses less digits than its factorization.

9660961787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1408 counting only the distinct ones).

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

The square root of 9660961787 is about 98290.1917131104. The cubic root of 9660961787 is about 2129.8063690646.

The spelling of 9660961787 in words is "nine billion, six hundred sixty million, nine hundred sixty-one thousand, seven hundred eighty-seven".