996644 has 12 divisors (see below), whose sum is σ = 1902768. Its totient is φ = 453000.

The previous prime is 996637. The next prime is 996647. The reversal of 996644 is 446699.

996644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 996598 and 996607.

It is not an unprimeable number, because it can be changed into a prime (996647) by changing a digit.

996644 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11282 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (158564).

2⁹⁹⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

996644 is a deficient number, since it is larger than the sum of its proper divisors (906124).

996644 is a wasteful number, since it uses less digits than its factorization.

996644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22666 (or 22664 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 996644 is about 998.3205897907. The cubic root of 996644 is about 99.8880079580. Note that the first 3 decimals are identical.

Subtracting from 996644 its reverse (446699), we obtain a palindrome (549945).

It can be divided in two parts, 99 and 6644, that multiplied together give a palindrome (657756).

The spelling of 996644 in words is "nine hundred ninety-six thousand, six hundred forty-four".