996985664 has 28 divisors (see below), whose sum is σ = 2046617700. Its totient is φ = 481302528.

The previous prime is 996985663. The next prime is 996985673. The reversal of 996985664 is 466589699.

996985664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 707985664 + 289000000 = 26608^2 + 17000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 996985597 and 996985606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996985663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266729 + ... + 270440.

Almost surely, 2^996985664 is an apocalyptic number.

It is an amenable number.

996985664 is an abundant number, since it is smaller than the sum of its proper divisors (1049632036).

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

996985664 is a wasteful number, since it uses less digits than its factorization.

996985664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537210 (or 537200 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 62.

The square root of 996985664 is about 31575.0797940401. The cubic root of 996985664 is about 998.9942100591.

The spelling of 996985664 in words is "nine hundred ninety-six million, nine hundred eighty-five thousand, six hundred sixty-four".