996687 has 12 divisors (see below), whose sum is σ = 1464840. Its totient is φ = 652848.

The previous prime is 996649. The next prime is 996689. The reversal of 996687 is 786699.

It is not a de Polignac number, because 996687 - 2⁸ = 996431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996689) 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 in 11 ways as a sum of consecutive naturals, for example, 408 + ... + 1469.

It is an arithmetic number, because the mean of its divisors is an integer number (122070).

2⁹⁹⁶⁶⁸⁷ is an apocalyptic number.

996687 is a deficient number, since it is larger than the sum of its proper divisors (468153).

996687 is a wasteful number, since it uses less digits than its factorization.

996687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1939 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 996687 is about 998.3421257264. The cubic root of 996687 is about 99.8894444865.

It can be divided in two parts, 99 and 6687, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 996687 in words is "nine hundred ninety-six thousand, six hundred eighty-seven".