8218545 has 16 divisors (see below), whose sum is σ = 13842240. Its totient is φ = 4152384.

The previous prime is 8218543. The next prime is 8218549. The reversal of 8218545 is 5458128.

It is not a de Polignac number, because 8218545 - 2¹ = 8218543 is a prime.

8218545 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8218541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14134 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (865140).

Almost surely, 2^8218545 is an apocalyptic number.

It is an amenable number.

8218545 is a deficient number, since it is larger than the sum of its proper divisors (5623695).

8218545 is a wasteful number, since it uses less digits than its factorization.

8218545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28864.

The product of its digits is 12800, while the sum is 33.

The square root of 8218545 is about 2866.8004813729. The cubic root of 8218545 is about 201.8048715314.

The spelling of 8218545 in words is "eight million, two hundred eighteen thousand, five hundred forty-five".