996667 has 4 divisors (see below), whose sum is σ = 1139056. Its totient is φ = 854280.

The previous prime is 996649. The next prime is 996689. The reversal of 996667 is 766699.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766699 = 127 ⋅6037.

It is not a de Polignac number, because 996667 - 2⁷ = 996539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996617) 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 3 ways as a sum of consecutive naturals, for example, 71184 + ... + 71197.

It is an arithmetic number, because the mean of its divisors is an integer number (284764).

2⁹⁹⁶⁶⁶⁷ is an apocalyptic number.

996667 is a deficient number, since it is larger than the sum of its proper divisors (142389).

996667 is a wasteful number, since it uses less digits than its factorization.

996667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142388.

The product of its digits is 122472, while the sum is 43.

The square root of 996667 is about 998.3321090699. The cubic root of 996667 is about 99.8887763388. Note that the first 3 decimals are identical.

The spelling of 996667 in words is "nine hundred ninety-six thousand, six hundred sixty-seven".