8247245 has 4 divisors (see below), whose sum is σ = 9896700. Its totient is φ = 6597792.

The previous prime is 8247241. The next prime is 8247247. The reversal of 8247245 is 5427428.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3433609 + 4813636 = 1853^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 8247245 - 2² = 8247241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8247241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824720 + ... + 824729.

It is an arithmetic number, because the mean of its divisors is an integer number (2474175).

Almost surely, 2^8247245 is an apocalyptic number.

It is an amenable number.

8247245 is a deficient number, since it is larger than the sum of its proper divisors (1649455).

8247245 is a wasteful number, since it uses less digits than its factorization.

8247245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649454.

The product of its digits is 17920, while the sum is 32.

The square root of 8247245 is about 2871.8016992822. The cubic root of 8247245 is about 202.0395063729.

The spelling of 8247245 in words is "eight million, two hundred forty-seven thousand, two hundred forty-five".