996885 has 12 divisors (see below), whose sum is σ = 1728012. Its totient is φ = 531648.

The previous prime is 996883. The next prime is 996887. The reversal of 996885 is 588699.

It is an interprime number because it is at equal distance from previous prime (996883) and next prime (996887).

It can be written as a sum of positive squares in 2 ways, for example, as 181476 + 815409 = 426^2 + 903^2 .

It is not a de Polignac number, because 996885 - 2¹ = 996883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 22153 = 996885 / (9 + 9 + 6 + 8 + 8 + 5).

996885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 996885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11032 + ... + 11121.

It is an arithmetic number, because the mean of its divisors is an integer number (144001).

2⁹⁹⁶⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

996885 is a deficient number, since it is larger than the sum of its proper divisors (731127).

996885 is a wasteful number, since it uses less digits than its factorization.

996885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22164 (or 22161 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 996885 is about 998.4412852041. The cubic root of 996885 is about 99.8960586661.

It can be divided in two parts, 996 and 885, that added together give a palindrome (1881).

The spelling of 996885 in words is "nine hundred ninety-six thousand, eight hundred eighty-five".