8218465 has 4 divisors (see below), whose sum is σ = 9862164. Its totient is φ = 6574768.

The previous prime is 8218459. The next prime is 8218481. The reversal of 8218465 is 5648128.

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 6507601 + 1710864 = 2551^2 + 1308^2 .

It is a cyclic number.

It is not a de Polignac number, because 8218465 - 2⁵ = 8218433 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 8218465.

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, 821842 + ... + 821851.

It is an arithmetic number, because the mean of its divisors is an integer number (2465541).

Almost surely, 2^8218465 is an apocalyptic number.

It is an amenable number.

8218465 is a deficient number, since it is larger than the sum of its proper divisors (1643699).

8218465 is a wasteful number, since it uses less digits than its factorization.

8218465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643698.

The product of its digits is 15360, while the sum is 34.

The square root of 8218465 is about 2866.7865285019. The cubic root of 8218465 is about 201.8042167342.

The spelling of 8218465 in words is "eight million, two hundred eighteen thousand, four hundred sixty-five".