7798 has 8 divisors (see below), whose sum is σ = 13392. Its totient is φ = 3336.

The previous prime is 7793. The next prime is 7817. The reversal of 7798 is 8977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7793) by changing a digit.

7798 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 in 3 ways as a sum of consecutive naturals, for example, 265 + ... + 292.

It is an arithmetic number, because the mean of its divisors is an integer number (1674).

2⁷⁷⁹⁸ is an apocalyptic number.

7798 is a deficient number, since it is larger than the sum of its proper divisors (5594).

7798 is a wasteful number, since it uses less digits than its factorization.

7798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its digits is 3528, while the sum is 31.

The square root of 7798 is about 88.3062851670. The cubic root of 7798 is about 19.8302296456.

It can be divided in two parts, 779 and 8, that added together give a palindrome (787).

The spelling of 7798 in words is "seven thousand, seven hundred ninety-eight".