9661331670 has 32 divisors (see below), whose sum is σ = 23190354432. Its totient is φ = 2576004192.

The previous prime is 9661331651. The next prime is 9661331671. The reversal of 9661331670 is 761331669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661331671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262419 + ... + 296961.

It is an arithmetic number, because the mean of its divisors is an integer number (724698576).

Almost surely, 2^9661331670 is an apocalyptic number.

9661331670 is an abundant number, since it is smaller than the sum of its proper divisors (13529022762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9661331670 is a wasteful number, since it uses less digits than its factorization.

9661331670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43876.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 9661331670 is about 98292.0732816233. The cubic root of 9661331670 is about 2129.8335495577.

The spelling of 9661331670 in words is "nine billion, six hundred sixty-one million, three hundred thirty-one thousand, six hundred seventy".