8247 has 4 divisors (see below), whose sum is σ = 11000. Its totient is φ = 5496.

The previous prime is 8243. The next prime is 8263. The reversal of 8247 is 7428.

It is a happy number.

8247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8247 - 2² = 8243 is a prime.

It is a D-number.

It is a Duffinian 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 (8243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (2750).

2⁸²⁴⁷ is an apocalyptic number.

8247 is a deficient number, since it is larger than the sum of its proper divisors (2753).

8247 is a wasteful number, since it uses less digits than its factorization.

8247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752.

The product of its digits is 448, while the sum is 21.

The square root of 8247 is about 90.8129946649. The cubic root of 8247 is about 20.2037505698.

The spelling of 8247 in words is "eight thousand, two hundred forty-seven".