9665870064 has 80 divisors (see below), whose sum is σ = 26454690720. Its totient is φ = 3030630400.

The previous prime is 9665870003. The next prime is 9665870099. The reversal of 9665870064 is 4600785669.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 9665869989 and 9665870016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2283502 + ... + 2287730.

It is an arithmetic number, because the mean of its divisors is an integer number (330683634).

Almost surely, 2^9665870064 is an apocalyptic number.

It is an amenable number.

9665870064 is an abundant number, since it is smaller than the sum of its proper divisors (16788820656).

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

9665870064 is a wasteful number, since it uses less digits than its factorization.

9665870064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058 (or 7052 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 9665870064 is about 98315.1568375904. The cubic root of 9665870064 is about 2130.1669925721.

The spelling of 9665870064 in words is "nine billion, six hundred sixty-five million, eight hundred seventy thousand, sixty-four".