996601 has 2 divisors, whose sum is σ = 996602. Its totient is φ = 996600.

The previous prime is 996599. The next prime is 996617. The reversal of 996601 is 106699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 561001 + 435600 = 749^2 + 660^2 .

It is an emirp because it is prime and its reverse (106699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996601 - 2¹ = 996599 is a prime.

Together with 996599, it forms a pair of twin primes.

It is a Chen prime.

996601 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (996631) 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 as a sum of consecutive naturals, namely, 498300 + 498301.

It is an arithmetic number, because the mean of its divisors is an integer number (498301).

2⁹⁹⁶⁶⁰¹ is an apocalyptic number.

It is an amenable number.

996601 is a deficient number, since it is larger than the sum of its proper divisors (1).

996601 is an equidigital number, since it uses as much as digits as its factorization.

996601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 996601 is about 998.2990533903. The cubic root of 996601 is about 99.8865713881.

The spelling of 996601 in words is "nine hundred ninety-six thousand, six hundred one".