8227645 has 4 divisors (see below), whose sum is σ = 9873180. Its totient is φ = 6582112.

The previous prime is 8227633. The next prime is 8227649. The reversal of 8227645 is 5467228.

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 2643876 + 5583769 = 1626^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 8227645 - 2¹¹ = 8225597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8227645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8227649) 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, 822760 + ... + 822769.

It is an arithmetic number, because the mean of its divisors is an integer number (2468295).

Almost surely, 2^8227645 is an apocalyptic number.

It is an amenable number.

8227645 is a deficient number, since it is larger than the sum of its proper divisors (1645535).

8227645 is a wasteful number, since it uses less digits than its factorization.

8227645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645534.

The product of its digits is 26880, while the sum is 34.

The square root of 8227645 is about 2868.3871774919. The cubic root of 8227645 is about 201.8793270039.

The spelling of 8227645 in words is "eight million, two hundred twenty-seven thousand, six hundred forty-five".