9970960644 has 72 divisors (see below), whose sum is σ = 26418642432. Its totient is φ = 3164832000.

The previous prime is 9970960613. The next prime is 9970960661. The reversal of 9970960644 is 4460690799.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157644 + ... + 211644.

Almost surely, 2^9970960644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9970960644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13209321216).

9970960644 is an abundant number, since it is smaller than the sum of its proper divisors (16447681788).

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

9970960644 is a wasteful number, since it uses less digits than its factorization.

9970960644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54257 (or 54252 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 9970960644 is about 99854.6976561444. The cubic root of 9970960644 is about 2152.3472215700.

The spelling of 9970960644 in words is "nine billion, nine hundred seventy million, nine hundred sixty thousand, six hundred forty-four".