996571 has 2 divisors, whose sum is σ = 996572. Its totient is φ = 996570.

The previous prime is 996563. The next prime is 996599. The reversal of 996571 is 175699.

It is a weak prime.

It is an emirp because it is prime and its reverse (175699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996571 - 2³ = 996563 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 996571.

It is not a weakly prime, because it can be changed into another prime (996511) 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, 498285 + 498286.

It is an arithmetic number, because the mean of its divisors is an integer number (498286).

2⁹⁹⁶⁵⁷¹ is an apocalyptic number.

996571 is a deficient number, since it is larger than the sum of its proper divisors (1).

996571 is an equidigital number, since it uses as much as digits as its factorization.

996571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 996571 is about 998.2840277196. The cubic root of 996571 is about 99.8855691057.

It can be divided in two parts, 99 and 6571, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 996571 in words is "nine hundred ninety-six thousand, five hundred seventy-one".