8223785 has 4 divisors (see below), whose sum is σ = 9868548. Its totient is φ = 6579024.

The previous prime is 8223749. The next prime is 8223863. The reversal of 8223785 is 5873228.

It is a happy number.

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 2785561 + 5438224 = 1669^2 + 2332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8223785 is a prime.

It is a d-powerful number, because it can be written as 8 + 2¹⁰ + 2¹⁶ + 3¹¹ + 7⁸ + 8⁶ + 5⁹ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822374 + ... + 822383.

It is an arithmetic number, because the mean of its divisors is an integer number (2467137).

Almost surely, 2^8223785 is an apocalyptic number.

It is an amenable number.

8223785 is a deficient number, since it is larger than the sum of its proper divisors (1644763).

8223785 is a wasteful number, since it uses less digits than its factorization.

8223785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644762.

The product of its digits is 26880, while the sum is 35.

The square root of 8223785 is about 2867.7142465734. The cubic root of 8223785 is about 201.8477515006.

The spelling of 8223785 in words is "eight million, two hundred twenty-three thousand, seven hundred eighty-five".