996881 has 2 divisors, whose sum is σ = 996882. Its totient is φ = 996880.

The previous prime is 996871. The next prime is 996883. The reversal of 996881 is 188699.

996881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 36481 = 980^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 996881 - 2¹⁸ = 734737 is a prime.

It is a super-2 number, since 2×996881² = 1987543456322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 996883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (996883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498440 + 498441.

It is an arithmetic number, because the mean of its divisors is an integer number (498441).

2⁹⁹⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

996881 is a deficient number, since it is larger than the sum of its proper divisors (1).

996881 is an equidigital number, since it uses as much as digits as its factorization.

996881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 41.

The square root of 996881 is about 998.4392820798. The cubic root of 996881 is about 99.8959250550.

The spelling of 996881 in words is "nine hundred ninety-six thousand, eight hundred eighty-one".