7996 has 6 divisors (see below), whose sum is σ = 14000. Its totient is φ = 3996.

The previous prime is 7993. The next prime is 8009. The reversal of 7996 is 6997.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996 + ... + 1003.

2⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

7996 is a deficient number, since it is larger than the sum of its proper divisors (6004).

7996 is a wasteful number, since it uses less digits than its factorization.

7996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 2001 counting only the distinct ones).

The product of its digits is 3402, while the sum is 31.

The square root of 7996 is about 89.4203556244. The cubic root of 7996 is about 19.9966661110.

Subtracting from 7996 its reverse (6997), we obtain a palindrome (999).

The spelling of 7996 in words is "seven thousand, nine hundred ninety-six".