8218263 has 4 divisors (see below), whose sum is σ = 10957688. Its totient is φ = 5478840.

The previous prime is 8218253. The next prime is 8218277. The reversal of 8218263 is 3628128.

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

It is a de Polignac number, because none of the positive numbers 2^k-8218263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8218263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218253) 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, 1369708 + ... + 1369713.

It is an arithmetic number, because the mean of its divisors is an integer number (2739422).

Almost surely, 2^8218263 is an apocalyptic number.

8218263 is a deficient number, since it is larger than the sum of its proper divisors (2739425).

8218263 is a wasteful number, since it uses less digits than its factorization.

8218263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739424.

The product of its digits is 4608, while the sum is 30.

The square root of 8218263 is about 2866.7512972004. The cubic root of 8218263 is about 201.8025633522.

The spelling of 8218263 in words is "eight million, two hundred eighteen thousand, two hundred sixty-three".