996642 has 24 divisors (see below), whose sum is σ = 2287116. Its totient is φ = 312576.

The previous prime is 996637. The next prime is 996647. The reversal of 996642 is 246699.

996642 is a `hidden beast` number, since 9 + 9 + 6 + 642 = 666.

996642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (996637) and next prime (996647).

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 114921 = 939^2 + 339^2 .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 996597 and 996606.

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

996642 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 11 ways as a sum of consecutive naturals, for example, 1323 + ... + 1934.

2⁹⁹⁶⁶⁴² is an apocalyptic number.

996642 is an abundant number, since it is smaller than the sum of its proper divisors (1290474).

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

996642 is a wasteful number, since it uses less digits than its factorization.

996642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3279 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 996642 is about 998.3195881079. The cubic root of 996642 is about 99.8879411417.

The spelling of 996642 in words is "nine hundred ninety-six thousand, six hundred forty-two".