996686 has 4 divisors (see below), whose sum is σ = 1495032. Its totient is φ = 498342.

The previous prime is 996649. The next prime is 996689. The reversal of 996686 is 686699.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996689) by changing a digit.

996686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249170 + ... + 249173.

It is an arithmetic number, because the mean of its divisors is an integer number (373758).

2⁹⁹⁶⁶⁸⁶ is an apocalyptic number.

996686 is a deficient number, since it is larger than the sum of its proper divisors (498346).

996686 is a wasteful number, since it uses less digits than its factorization.

996686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498345.

The product of its digits is 139968, while the sum is 44.

The square root of 996686 is about 998.3416248960. The cubic root of 996686 is about 99.8894110793.

The spelling of 996686 in words is "nine hundred ninety-six thousand, six hundred eighty-six".