996664 has 32 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 460512.

The previous prime is 996649. The next prime is 996689. The reversal of 996664 is 466699.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11967 + ... + 12049.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁹⁹⁶⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

996664 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

996664 is a wasteful number, since it uses less digits than its factorization.

996664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 183 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 996664 is about 998.3306065628. The cubic root of 996664 is about 99.8886761159. Note that the first 3 decimals are identical.

The spelling of 996664 in words is "nine hundred ninety-six thousand, six hundred sixty-four".