9966965860 has 12 divisors (see below), whose sum is σ = 20930628348. Its totient is φ = 3986786336.

The previous prime is 9966965849. The next prime is 9966965917. The reversal of 9966965860 is 685696699.

It can be written as a sum of positive squares in 2 ways, for example, as 4584102436 + 5382863424 = 67706^2 + 73368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9966965792 and 9966965801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249174127 + ... + 249174166.

It is an arithmetic number, because the mean of its divisors is an integer number (1744219029).

Almost surely, 2^9966965860 is an apocalyptic number.

It is an amenable number.

9966965860 is an abundant number, since it is smaller than the sum of its proper divisors (10963662488).

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

9966965860 is a wasteful number, since it uses less digits than its factorization.

9966965860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498348302 (or 498348300 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 64.

The square root of 9966965860 is about 99834.6926674290. The cubic root of 9966965860 is about 2152.0597430589.

The spelling of 9966965860 in words is "nine billion, nine hundred sixty-six million, nine hundred sixty-five thousand, eight hundred sixty".