996630656 has 128 divisors (see below), whose sum is σ = 2390031360. Its totient is φ = 404951040.

The previous prime is 996630643. The next prime is 996630659. The reversal of 996630656 is 656036699.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (996630659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471790 + ... + 1472466.

It is an arithmetic number, because the mean of its divisors is an integer number (18672120).

Almost surely, 2^996630656 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 996630656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195015680).

996630656 is an abundant number, since it is smaller than the sum of its proper divisors (1393400704).

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

996630656 is a wasteful number, since it uses less digits than its factorization.

996630656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 50.

The square root of 996630656 is about 31569.4576450087. The cubic root of 996630656 is about 998.8756215803.

The spelling of 996630656 in words is "nine hundred ninety-six million, six hundred thirty thousand, six hundred fifty-six".