8272217 has 4 divisors (see below), whose sum is σ = 8758836. Its totient is φ = 7785600.

The previous prime is 8272189. The next prime is 8272219. The reversal of 8272217 is 7122728.

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 6370576 + 1901641 = 2524^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 8272217 - 2⁶ = 8272153 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 8272217.

It is not an unprimeable number, because it can be changed into a prime (8272219) 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, 243284 + ... + 243317.

It is an arithmetic number, because the mean of its divisors is an integer number (2189709).

Almost surely, 2^8272217 is an apocalyptic number.

It is an amenable number.

8272217 is a deficient number, since it is larger than the sum of its proper divisors (486619).

8272217 is a wasteful number, since it uses less digits than its factorization.

8272217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486618.

The product of its digits is 3136, while the sum is 29.

The square root of 8272217 is about 2876.1462062976. The cubic root of 8272217 is about 202.2432207372.

The spelling of 8272217 in words is "eight million, two hundred seventy-two thousand, two hundred seventeen".